A376246 a(n) is the numerator of Sum_{k = 1..n} 1 / (A376244(k) * A376245(k)).

1, 7, 47, 109, 823, 4757, 7582661, 3026164178509, 277505140475561534945603, 260165888480949800316206335248860247693882947, 1735545885361077128120249087863835952607412447268583818069629193850545735375261166814107

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, A376247.

Programs

PARI

\\ See Links section.