A275928 Number of odd divisors of A101292(n).

1, 1, 2, 2, 2, 8, 8, 4, 12, 18, 8, 8, 4, 12, 32, 8, 4, 24, 12, 16, 128, 64, 32, 16, 96, 144, 32, 64, 12, 256, 16, 16, 16, 384, 128, 48, 6, 48, 64, 128, 8, 64, 32, 64, 384, 144, 16, 128, 12, 144, 768, 64, 32, 2048, 128, 256, 256, 1536, 32, 64, 128, 48

Offset: 0

Author

N. J. A. Sloane, Aug 30 2016

Keywords

• nonn

Links

• R. C. Castillo, On the Sum of Corresponding Factorials and Triangular Numbers: Runsums, Trapezoids and Politeness, Asia Pacific Journal of Multidisciplinary Research, 3 (2015), 95-101.

Crossrefs

Cf. A001277, A101292.

Programs

Mathematica

Table[Count[Divisors[n! + Total@ Range@ n], d_ /; OddQ@ d], {n, 0, 54}] (* Michael De Vlieger, Aug 30 2016 *)

Extensions

More terms from Michael De Vlieger, Aug 30 2016

More terms from Alois P. Heinz, Aug 30 2016