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A009995 Numbers with digits in strictly decreasing order. +0
7
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 21, 30, 31, 32, 40, 41, 42, 43, 50, 51, 52, 53, 54, 60, 61, 62, 63, 64, 65, 70, 71, 72, 73, 74, 75, 76, 80, 81, 82, 83, 84, 85, 86, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 210, 310, 320, 321, 410, 420, 421, 430, 431, 432, 510, 520, 521, 530 (list; graph; listen)
OFFSET

0,3

COMMENT

There are precisely 1023 terms (corresponding to every nonempty subset of {0..9}).

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

MATHEMATICA

Sort@ Flatten@ Table[FromDigits /@ Subsets[ Range[9, 0, -1], {n}], {n, 10}] (Zak Seidov (zakseidov(AT)yahoo.com), May 10 2006)

CROSSREFS

Cf. A009993.

Sequence in context: A089583 A032865 A032889 this_sequence A038367 A161350 A108652

Adjacent sequences: A009992 A009993 A009994 this_sequence A009996 A009997 A009998

KEYWORD

nonn,fini,base

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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