

A097210


Numbers that appear in A076078.


2



1, 2, 4, 8, 10, 16, 32, 44, 64, 128, 184, 218, 256, 400, 512, 752, 1024, 2048, 3040, 3392, 3748, 4096, 8192, 12224, 16384, 27904, 32768, 49024, 57856, 61064, 64594, 65536, 131072, 196352, 226304, 253808, 262144, 524288, 785920, 954368, 981520, 1048576
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OFFSET

1,2


COMMENTS

A076078(n) = the number of sets of distinct positive integers with a least common multiple of n.
All powers of 2 are in the sequence.  Robert G. Wilson v, Aug 14 2004


LINKS

Table of n, a(n) for n=1..42.


MATHEMATICA

f[n_] := Block[{d = Divisors[n]}, Plus @@ (MoebiusMu[n/d](2^DivisorSigma[0, d]  1))]; Take[ Union[ Table[ f[n], {n, 2^20}]], 42] (* Robert G. Wilson v, Aug 14 2004 *)


CROSSREFS

Cf. A076078, A097211.
Sequence in context: A226816 A083655 A271816 * A097214 A045579 A177050
Adjacent sequences: A097207 A097208 A097209 * A097211 A097212 A097213


KEYWORD

nonn


AUTHOR

Matthew Vandermast, Aug 01 2004


STATUS

approved



