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A113015
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Number of decimal digits in B(10^n) where B(k) is the k-th Bell number.
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3
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1, 6, 116, 1928, 27665, 364472, 4547586, 54670463, 639838113, 7338610159, 82857366967
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Eric Weisstein's World of Mathematics, Bell Number
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FORMULA
| a(n) ~ 10^n * n. [Charles R Greathouse IV, Aug 11 2011]
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MATHEMATICA
| f[n_] := Sum[ StirlingS2[n, k], {k, n}]; Table[ Length[ IntegerDigits[ f[10^n]]], {n, 0, 4}] (from Robert G. Wilson v (rgwv(at)rgwv.com), Oct 12 2005)
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CROSSREFS
| Cf. A000110.
Sequence in context: A121544 A003425 A052465 * A024275 A100070 A135869
Adjacent sequences: A113012 A113013 A113014 * A113016 A113017 A113018
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KEYWORD
| nonn,base
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Oct 10, 2005
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EXTENSIONS
| a(5)-a(10) from Charles R Greathouse IV, Aug 11 2011
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