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A004259
a(n) = floor(10*log_2(n)).
1
0, 10, 15, 20, 23, 25, 28, 30, 31, 33, 34, 35, 37, 38, 39, 40, 40, 41, 42, 43, 43, 44, 45, 45, 46, 47, 47, 48, 48, 49, 49, 50, 50, 50, 51, 51, 52, 52, 52, 53, 53, 53, 54, 54, 54, 55, 55, 55, 56, 56, 56, 57, 57, 57, 57
OFFSET
1,2
LINKS
MAPLE
seq(ilog2(n^10), n=1..100); # Robert Israel, Aug 02 2019
PROG
(Magma) [Floor(10*Log(2, n)):n in [1..55]]; // Marius A. Burtea, Aug 02 2019
CROSSREFS
Sequence in context: A232501 A138593 A362010 * A210652 A284804 A006623
KEYWORD
nonn
STATUS
approved