A180936 a(n) is a power of its number of divisors.

1, 2, 9, 625, 6561, 21952, 64000, 117649, 4100625, 25937424601, 23298085122481, 29192926025390625, 59604644775390625, 300283484326400961, 48661191875666868481, 104127350297911241532841

Offset

1,2

Links

D. W. Wilson, Table of n, a(n) for n=1..278

Example

a(5) = 6561 = 9^4 has 9 divisors.
a(12) = 29192926025390625 = 225^7 has 225 divisors.

Crossrefs

Cf. A000005, A180934, A180935.

Sequence in context: A086693 A085605 A336247 * A036878 A162710 A249903

Adjacent sequences: A180933 A180934 A180935 * A180937 A180938 A180939

Keyword

nonn

Author

David W. Wilson, Sep 26 2010

Status

approved