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

Author

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

Keywords

• nonn

Links

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

Crossrefs

Cf. A005381, A070824.

Programs

Maple

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