A259977 Number of proper divisors of A005381(n).

1, 2, 2, 3, 2, 2, 1, 2, 2, 4, 2, 2, 2, 7, 2, 6, 4, 2, 1, 4, 2, 4, 2, 6, 2, 2, 4, 5, 2, 6, 2, 6, 4, 4, 2, 6, 3, 2, 2, 2, 2, 6, 2, 4, 2, 2, 2, 10, 4, 7, 6, 2, 2, 8, 2, 4, 4, 2, 2, 14, 1, 2, 2, 4, 2, 10, 2, 6, 2, 2, 6, 6, 2, 2, 2, 13, 2, 2, 4, 4, 4, 6, 2, 10, 2, 10, 2, 8, 6, 2, 1, 6, 4, 4, 4, 8, 2, 2, 2, 6

Offset

1,2

Links

Table of n, a(n) for n=1..100.

R. P. Boas & N. J. A. Sloane, Correspondence, 1974

Maple

A259977 := proc(n)
    A070824(A005381(n)) ;
end proc:
seq(A259977(n), n=1..100) ; # R. J. Mathar, Jul 14 2015

Crossrefs

Cf. A005381, A070824.

Sequence in context: A156988 A304199 A251140 * A341434 A115312 A237721

Adjacent sequences: A259974 A259975 A259976 * A259978 A259979 A259980

Keyword

nonn

Author

N. J. A. Sloane, Jul 12 2015, following a suggestion from R. P. Boas, May 19 1974

Status

approved