A392799 Denominators in the expansion of g.f. x^2/(x - log(1 + x)).

1, 3, 9, 135, 810, 8505, 510300, 382725, 9185400, 108256500, 63654822000, 155158628625, 10639448820000, 178742740176, 268114110264000, 598229608526550000, 14357510604637200000, 409189052232160200000, 270064774473225732000000, 101274290427459649500000

Offset

0,2

References

Konrad Knopp, Theory and application of infinite series, Blackie & Son Limited, London and Glasgow, 1954. See p. 216, exercise 75e.

Links

Table of n, a(n) for n=0..19.

Example

G.f. = 2 + (4/3)*x - (1/9)*x^2 + (8/135)*x^3 - (31/810)*x^4 + (233/8505)*x^5 + ...

Mathematica

CoefficientList[Series[x^2/(x-Log[1+x]), {x, 0, 19}], x]//Denominator

Crossrefs

Cf. A392798 (numerators).

Sequence in context: A257032 A141143 A368092 * A163402 A288757 A289900

Adjacent sequences: A392796 A392797 A392798 * A392800 A392801 A392802

Keyword

nonn,frac

Author

Stefano Spezia, Jan 23 2026

Status

approved