Cannabaceae

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← 207 208 209 →
Cardinaltwo hundred eight
Ordinal208th
(two hundred eighth)
Factorization24 × 13
Greek numeralΣΗ´
Roman numeralCCVIII
Binary110100002
Ternary212013
Senary5446
Octal3208
Duodecimal15412
HexadecimalD016

208 (two hundred [and] eight) is the natural number following 207 and preceding 209.

208 is a practical number,[1] a tetranacci number,[2][3] a rhombic matchstick number,[4] a happy number, and a member of Aronson's sequence.[5] There are exactly 208 five-bead necklaces drawn from a set of beads with four colors,[6] and 208 generalized weak orders on three labeled points.[7][8]

References[edit]

  1. ^ Sloane, N. J. A. (ed.). "Sequence A005153 (Practical numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A000078 (Tetranacci numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ Waddill, Marcellus E. (1992), "The Tetranacci sequence and generalizations" (PDF), The Fibonacci Quarterly, 30 (1): 9–20, MR 1146535.
  4. ^ Sloane, N. J. A. (ed.). "Sequence A045944 (Rhombic matchstick numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  5. ^ Sloane, N. J. A. (ed.). "Sequence A005224 (T is the first, fourth, eleventh, ... letter in this sentence, not counting spaces or commas (Aronson's sequence))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  6. ^ Sloane, N. J. A. (ed.). "Sequence A001868 (Number of n-bead necklaces with 4 colors)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  7. ^ Sloane, N. J. A. (ed.). "Sequence A004121 (Generalized weak orders on n points)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  8. ^ Wagner, Carl G. (1982), "Enumeration of generalized weak orders", Archiv der Mathematik, 39 (2): 147–152, doi:10.1007/BF01899195, MR 0675654, S2CID 8263031.
source: https://en.wikipedia.org/wiki/208_(number)

One thought on “Cannabaceae”

  1. Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
    View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction

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