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A113015 Number of decimal digits in B(10^n) where B(k) is the k-th Bell number. 3
1, 6, 116, 1928, 27665, 364472, 4547586, 54670463, 639838113, 7338610159, 82857366967 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..10.

Eric Weisstein's World of Mathematics, Bell Number

FORMULA

a(n) ~ 10^n * n. - Charles R Greathouse IV, Aug 11 2011

MATHEMATICA

f[n_] := Sum[ StirlingS2[n, k], {k, n}]; Table[ Length[ IntegerDigits[ f[10^n]]], {n, 0, 4}] (* Robert G. Wilson v, Oct 12 2005 *)

CROSSREFS

Cf. A000110.

Sequence in context: A003425 A052465 A229582 * A024275 A287652 A259064

Adjacent sequences:  A113012 A113013 A113014 * A113016 A113017 A113018

KEYWORD

nonn,base

AUTHOR

Eric W. Weisstein, Oct 10 2005

EXTENSIONS

a(5)-a(10) from Charles R Greathouse IV, Aug 11 2011

STATUS

approved

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Last modified April 13 12:29 EDT 2021. Contains 342936 sequences. (Running on oeis4.)