A331558 - OEIS

A331558

E.g.f.: log(1 - x - log(1 - x)).

0, 1, 2, 3, 4, 20, 216, 1862, 13840, 104904, 949200, 10517232, 130307904, 1694503824, 23063845728, 335427395760, 5269616092416, 88835797577472, 1587229554415104, 29838489410093184, 589394278657267200, 12235109311726689024, 266570965998899071488

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OFFSET

1,3

COMMENTS

Logarithmic transform applied twice to A000166.

LINKS

Table of n, a(n) for n=1..23.

MATHEMATICA

nmax = 23; CoefficientList[Series[Log[1 - x - Log[1 - x]], {x, 0, nmax}], x] Range[0, nmax]! // Rest

CROSSREFS

Cf. A000166, A052808, A089064, A331559.

Sequence in context: A012283 A012286 A302610 * A347210 A012284 A244673

Adjacent sequences: A331555 A331556 A331557 * A331559 A331560 A331561

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Jan 20 2020

STATUS

approved