A205030 The number s(j)=j*(j+1) such that n divides s(k)-s(j)>0, where k is the least positive integer for which such a j exists.

2, 2, 6, 2, 2, 6, 6, 12, 2, 2, 20, 6, 30, 6, 12, 56, 56, 2, 72, 2, 30, 20, 110, 6, 6, 30, 2, 2, 182, 12, 210, 240, 6, 56, 2, 6, 306, 72, 12, 2, 380, 30, 420, 12, 20, 110, 506, 42, 12, 6, 30, 20, 650, 2, 72, 20, 42, 182, 812, 12

Offset

1,1

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..60.

Mathematica

(See the program at A205018.)

Crossrefs

Cf. A205018, A204892.

Sequence in context: A296091 A352892 A126889 * A278250 A357441 A134339

Adjacent sequences: A205027 A205028 A205029 * A205031 A205032 A205033

Keyword

nonn

Author

Clark Kimberling, Jan 22 2012

Status

approved