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Search: id:A025531
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A025531 a(n) = (2nd elementary symmetric function of {1/1, 1/2, ..., 1/n})*(LCM of S)^2, where S = {1,2,...,n}. +0
1
2, 36, 210, 6750, 8120, 459620, 2067170, 20522250, 22318758, 2905171038, 3098543448, 554652370272, 584150230092, 612299943684, 2556925522866 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A143745 A007757 A141217 this_sequence A099903 A074426 A082636

Adjacent sequences: A025528 A025529 A025530 this_sequence A025532 A025533 A025534

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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