A376247 a(n) is the denominator of Sum_{k = 1..n} 1 / (A376244(k) * A376245(k)).

3, 12, 60, 120, 840, 4760, 7582680, 3026164178520, 277505140475561534945640, 260165888480949800316206335248860247693882960, 1735545885361077128120249087863835952607412447268583818069629193850545735375261166814160

Offset: 1

Author

Rémy Sigrist and N. J. A. Sloane, Sep 16 2024

Keywords

• nonn
• frac

Links

• Rémy Sigrist, PARI program

Crossrefs

Cf. A376244, A376245, A376246.

Programs

PARI

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