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A190297 Bisection of A013697. 1
1, 12, 57, 245, 1005, 4063, 16327, 65435, 261965, 1048259, 4193742, 16776218, 67107091, 268432305, 1073736223, 4294957340, 17179851485, 68719445272, 274877851009, 1099511528337, 4398046334325, 17592185730143, 70368743618958, 281474975717403, 1125899905076842 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..25.

FORMULA

a(n) = floor(1/(zeta(2n)-1)).

CROSSREFS

Sequence in context: A051877 A212065 A121693 * A072259 A272233 A283164

Adjacent sequences: A190294 A190295 A190296 * A190298 A190299 A190300

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 13 2011

STATUS

approved

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Last modified November 28 11:08 EST 2022. Contains 358411 sequences. (Running on oeis4.)