A376245 Lexicographically earliest sequence of positive integers a(1), a(2), ... such that for any n > 0, Sum_{k = 1..n} 1 / (a(k) * A376244(k)) < 1.

1, 1, 1, 2, 2, 17, 177, 399089, 25009621311, 1875034732942983344228, 1539443127106211836190570031058344660910551, 4678021254342525951806601314996862405949898779699686841158030172103896860849760557451

Offset

1,4

Links

Table of n, a(n) for n=1..12.

Rémy Sigrist, PARI program

Prog

(PARI) \\ See Links section.

Crossrefs

Cf. A376244, A376246, A376247.

Sequence in context: A238289 A206095 A222451 * A000528 A260478 A074970

Adjacent sequences: A376242 A376243 A376244 * A376246 A376247 A376248

Keyword

nonn

Author

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

Status

approved