



0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 0, 0, 3, 0, 0, 6, 0, 0, 10, 1, 0, 18, 0, 0, 36, 0, 0, 62, 0, 4, 113, 0, 0, 210, 6, 0, 391, 0, 0, 739, 0, 0, 1365, 2, 20, 2570, 0, 0, 4854, 37, 4, 9198, 0, 0, 17544, 0, 0, 33296, 0, 126, 63550, 0, 0, 121574, 248, 0, 233016, 0, 0, 447828, 0
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OFFSET

0,15


COMMENTS

There was a suggestion that these were the same sequence, but they are not.


LINKS

Table of n, a(n) for n=0..75.


FORMULA

A000799(n) = A064355(n) just for: (1) n a power of 2. (2) n = p * 2^k, where p is a prime with p > 2^{2^k  k}. (Including the case k=0. ) (3) n = 9. Franklin T. AdamsWatters, Feb 14 2006


MATHEMATICA

f[n_] := Block[{d = Select[Divisors@n, OddQ@# &]}, Floor[2^n/n]  Plus @@ (2^(n/d)*MoebiusMu@d)/n]; Array[f, 76] (* Robert G. Wilson v *)


CROSSREFS

Cf. A000799, A064355.
Sequence in context: A035377 A136274 A290976 * A182797 A212163 A212195
Adjacent sequences: A114696 A114697 A114698 * A114700 A114701 A114702


KEYWORD

nonn


AUTHOR

Paul D. Hanna, Feb 20 2006


EXTENSIONS

More terms from Robert G. Wilson v, Feb 20 2006


STATUS

approved



