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A097416 Numbers n such that A076078(m)=n for some m, excluding powers of 2. 2
10, 44, 184, 218, 400, 752, 3040, 3392, 3748, 12224, 27904, 49024, 57856, 61064, 64594, 196352, 226304, 253808, 785920, 954368, 981520, 1822720, 3144704, 12580864, 14630912, 15499264, 15722528, 16450240, 16700300, 31522816, 50327552 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A076078(n) equals the number of sets of distinct positive integers with a least common multiple of n.

LINKS

Table of n, a(n) for n=1..31.

MATHEMATICA

f[n_] := Block[{d = Divisors[n]}, Plus @@ (MoebiusMu[n/d](2^DivisorSigma[0, d] - 1))]; t = Union[ Table[ f[n], {n, 2^20}]]; Complement[ Take[t, 52], Table[2^i, {i, 0, 20}]]

CROSSREFS

Cf. A076078, A097215.

Sequence in context: A124852 A220923 A220994 * A076373 A097215 A281993

Adjacent sequences:  A097413 A097414 A097415 * A097417 A097418 A097419

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Aug 17 2004

STATUS

approved

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Last modified March 22 22:05 EDT 2017. Contains 283901 sequences.