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A004153
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Factorial numbers written backwards.
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2
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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; refs; listen; history; internal format)
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OFFSET
| 0,3
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MAPLE
| 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 (paoloplava(AT)gmail.com), Aug 07 2008]
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CROSSREFS
| Cf. A000142.
Sequence in context: A118623 A000612 A096138 * A071440 A033936 A203618
Adjacent sequences: A004150 A004151 A004152 * A004154 A004155 A004156
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KEYWORD
| nonn,base
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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