A205140 - OEIS

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A205140

Least s(k) such that n divides s(k)-s(j) for some j<k, where s(j)=j(3j-1)/2, the j-th pentagonal number.

2

5, 5, 22, 5, 22, 35, 12, 51, 145, 22, 12, 70, 35, 92, 35, 51, 22, 145, 70, 92, 22, 92, 35, 70, 51, 247, 1162, 117, 51, 35, 176, 715, 117, 35, 70, 145, 247, 477, 51, 92, 92, 176, 330, 330, 247, 51, 117, 70, 247, 51, 247, 330, 145, 1247, 145, 117, 92, 70

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

For a guide to related sequences, see A204892.

LINKS

Table of n, a(n) for n=1..58.

MATHEMATICA

(See the program at A205138.)

CROSSREFS

Cf. A204892, A205138.

Sequence in context: A097336 A365104 A014619 * A097016 A183257 A255456

Adjacent sequences: A205137 A205138 A205139 * A205141 A205142 A205143

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 25 2012

STATUS

approved