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A081731 a(n)=1/60*(A000364(n+2)-A000364(n)). 0
1, 23, 841, 45023, 3321841, 323146823, 40078005241, 6172529945423, 1155774491891041, 258569396539480823, 68116719340312179241, 20870735447824438473023, 7358996769608563523829841 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..13.

CROSSREFS

Cf. A000364, A060075.

Sequence in context: A027410 A158505 A217116 * A183523 A233339 A008961

Adjacent sequences:  A081728 A081729 A081730 * A081732 A081733 A081734

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Apr 06 2003

STATUS

approved

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Last modified February 22 19:59 EST 2019. Contains 320403 sequences. (Running on oeis4.)