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Search: id:A004153
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| A004153 |
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Factorial numbers written backwards. |
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+0
3
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| 1, 1, 2, 6, 42, 21, 27, 405, 2304, 88263, 88263, 861993, 6100974, 80207226, 219287178, 8634767031, 88898722902, 690824786553, 8275073732046, 238804001546121, 466718002092342
(list; graph; listen)
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OFFSET
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0,3
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MAPLE
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P:=proc(i) local a, b, c, n; for n from 1 by 1 to i do a:=evalf(floor(log10(n!)+1)); b:=n!; c:=0; while a>0 do c:=c+(b-(trunc(b/10)*10))*10^(a-1); b:=trunc(b/10); a:=a-1; od; print(c); od; end: P(100) [From Paolo P. Lava (ppl(AT)spl.at), Aug 07 2008]
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CROSSREFS
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Cf. A000142.
Sequence in context: A118623 A000612 A096138 this_sequence A071440 A033936 A098814
Adjacent sequences: A004150 A004151 A004152 this_sequence A004154 A004155 A004156
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KEYWORD
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nonn,base
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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