A065618 a(n) = ceiling(log_2(n)*2^n/n).

0, 2, 5, 8, 15, 28, 52, 96, 181, 341, 645, 1224, 2332, 4456, 8535, 16384, 31515, 60729, 117218, 226594, 438637, 850192, 1649843, 3205122, 6232879, 12132353, 23636674, 46088019, 89934783, 175624456, 343195341, 671088640, 1313061078, 2570645474, 5035452071

Offset

1,2

Links

Harry J. Smith, Table of n, a(n) for n = 1..200

Prog

(PARI) { default(realprecision, 100); t=1/log(2); for (n=1, 200, write("b065618.txt", n, " ", ceil( t*log(n)*2^n/n - 0.0000001)) ) } \\ Harry J. Smith, Oct 24 2009

Crossrefs

Sequence in context: A051293 A081660 A285291 * A257548 A186413 A080084

Adjacent sequences: A065615 A065616 A065617 * A065619 A065620 A065621

Keyword

nonn

Author

N. J. A. Sloane, Dec 03 2001

Extensions

a(4) corrected and a(34) added by Harry J. Smith, Oct 24 2009

Status

approved