A205133 The number s(j) such that n divides s(k)-s(j), where s(j)=j*(2*j-1) and k is the least positive integer for which such a j exists.

1, 1, 6, 1, 1, 15, 1, 1, 6, 15, 6, 6, 15, 1, 15, 1, 28, 1, 28, 6, 45, 6, 45, 15, 66, 153, 1, 91, 91, 15, 91, 1, 120, 276, 15, 45, 153, 28, 6, 45, 190, 66, 190, 1, 1, 45, 231, 6, 6, 28, 15, 120, 325, 66, 66, 45, 6, 861, 378, 6

Offset: 1

Author

Clark Kimberling, Jan 25 2012

Keywords

• nonn

Comments

For a guide to related sequences, see A204892.

Crossrefs

Cf. A205130, A204892.

Programs

Mathematica

(See the program at A205130.)