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A341588 E.g.f.: -log(1 + log(1 - x))^3 / 6. 2
1, 12, 130, 1485, 18508, 253400, 3805723, 62437500, 1113510409, 21479997957, 446094038806, 9930796412082, 236037249893092, 5968192832899412, 160007282538148508, 4534905316824903144, 135500246340709682692, 4257646241716404353684, 140366073694357927723936, 4845119946789226304526392 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

LINKS

Table of n, a(n) for n=3..22.

FORMULA

a(n) = Sum_{k=3..n} |Stirling1(n, k) * Stirling1(k, 3)|.

MATHEMATICA

nmax = 22; CoefficientList[Series[-Log[1 + Log[1 - x]]^3/6, {x, 0, nmax}], x] Range[0, nmax]! // Drop[#, 3] &

Table[Sum[Abs[StirlingS1[n, k] StirlingS1[k, 3]], {k, 3, n}], {n, 3, 22}]

CROSSREFS

Cf. A000399, A000559, A003713, A008275, A039814, A341587.

Sequence in context: A163414 A111777 A209013 * A240798 A160962 A097783

Adjacent sequences:  A341585 A341586 A341587 * A341589 A341590 A341591

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Feb 15 2021

STATUS

approved

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Last modified May 6 12:27 EDT 2021. Contains 343585 sequences. (Running on oeis4.)