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A009996
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Numbers with digits in nonincreasing order.
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15
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 21, 22, 30, 31, 32, 33, 40, 41, 42, 43, 44, 50, 51, 52, 53, 54, 55, 60, 61, 62, 63, 64, 65, 66, 70, 71, 72, 73, 74, 75, 76, 77, 80, 81, 82, 83, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 110, 111, 200, 210, 211
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listen;
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OFFSET
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1,3
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COMMENTS
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Base 10 representation Sum{d(i)*10^i: i=0,1,...,m} has d(m) >= d(m-1) >= ... >= d(1) >= d(0).
These numbers might be called "Nialpdromes".
A004186(a(n)) = a(n). - Reinhard Zumkeller, Oct 31 2007
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LINKS
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R. Zumkeller, Table of n, a(n) for n = 1..1000
Eric Weisstein's World of Mathematics, Digit.
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MATHEMATICA
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Select[Range[0, 211], GreaterEqual@@IntegerDigits[#]&] (* Ray Chandler, Oct 25 2011 *)
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CROSSREFS
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Differs from A032873 and A032907.
Cf. A064222, A152054.
Sequence in context: A084383 A032873 A072543 * A032907 A130576 A190220
Adjacent sequences: A009993 A009994 A009995 * A009997 A009998 A009999
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KEYWORD
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nonn,base
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AUTHOR
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N. J. A. Sloane.
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EXTENSIONS
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Corrected by Rick L. Shepherd, Jun 06 2002
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STATUS
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approved
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