A205137 - OEIS

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A205137

Least k such that n divides a difference between distinct pentagonal numbers when the differences are ordered as in A205136.

1, 1, 4, 1, 6, 8, 3, 15, 37, 6, 2, 19, 10, 25, 8, 15, 5, 37, 21, 24, 4, 28, 9, 19, 11, 75, 352, 30, 14, 8, 55, 231, 34, 7, 20, 37, 78, 150, 13, 24, 27, 53, 105, 95, 70, 12, 35, 19, 72, 11, 76, 98, 44, 380, 41, 30, 26, 18, 54, 103

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

OFFSET

1,3

COMMENTS

For a guide to related sequences, see A204892.

LINKS

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

MATHEMATICA

(See the program at A205138.)

CROSSREFS

Cf. A205138, A204892.

Sequence in context: A134234 A207628 A350106 * A223534 A222391 A332890

Adjacent sequences: A205134 A205135 A205136 * A205138 A205139 A205140

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 25 2012

STATUS

approved