OFFSET
0,1
COMMENTS
For n>0 almost all digits of a(n) from the left are equal to the first terms of the expansion Log[10]/Log[2] = {3, 3, 2, 1, 9, 2, 8, 0, 9, 4, 8, 8, 7, 3, 6, 2, 3, 4, 7, 8, 7, 0, 3, 1, 9, 4, 2, 9, 4, 8, 9, 3, 9, ...} = A020862(n). - Alexander Adamchuk, Jan 16 2007
LINKS
Farideh Firoozbakht, Table of n, a(n) for n = 0..29
G. L. Honaker, Jr. and Chris Caldwell, Prime Curios! 33219281
Author?, GIMPS [Broken link?]
EXAMPLE
E.g. a(7)=33219281 because 2^33219281-1 is the smallest Mersenne number that contains 10^7 (ten million) or more decimal digits.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
G. L. Honaker, Jr., Jun 25 2006
EXTENSIONS
More terms from Farideh Firoozbakht, Jul 22 2006
STATUS
approved