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Search: id:A068398
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A068398 Number of digits in (2^n)*(n!). +0
1
1, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 27, 28, 30, 32, 33, 35, 37, 38, 40, 42, 44, 46, 47, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 103, 105, 107, 109, 111, 113, 115, 117, 120 (list; graph; listen)
OFFSET

1,3

FORMULA

a(n) = floor(log(n!*2^n)/log(10))+1

CROSSREFS

Adjacent sequences: A068395 A068396 A068397 this_sequence A068399 A068400 A068401

Sequence in context: A005459 A039216 A091208 this_sequence A133194 A022774 A045546

KEYWORD

nonn,base

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 01 2002

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Last modified October 5 16:50 EDT 2008. Contains 144613 sequences.


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