A205132 Least s(k) such that n divides s(k)-s(j) for some j<k, where s(j)=2*j^2-j, the j-th hexagonal number.

6, 15, 15, 45, 6, 45, 15, 153, 15, 45, 28, 66, 28, 15, 45, 561, 45, 91, 66, 66, 66, 28, 91, 231, 91, 231, 28, 231, 120, 45, 153, 2145, 153, 378, 120, 153, 190, 66, 45, 325, 231, 276, 276, 45, 91, 91, 325, 630, 153, 378, 66, 276, 378, 120, 231, 325, 120

Offset

1,1

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..57.

Mathematica

(See the program at A205130.)

Crossrefs

Cf. A205130, A204892.

Sequence in context: A352098 A201142 A200902 * A199223 A199094 A009579

Adjacent sequences: A205129 A205130 A205131 * A205133 A205134 A205135

Keyword

nonn

Author

Clark Kimberling, Jan 25 2012

Status

approved