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A376247
a(n) is the denominator of Sum_{k = 1..n} 1 / (A376244(k) * A376245(k)).
4
3, 12, 60, 120, 840, 4760, 7582680, 3026164178520, 277505140475561534945640, 260165888480949800316206335248860247693882960, 1735545885361077128120249087863835952607412447268583818069629193850545735375261166814160
OFFSET
1,1
PROG
(PARI) \\ See Links section.
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
STATUS
approved