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A277463 E.g.f.: sinh(x)/(1+LambertW(-x)). 5

%I #12 Nov 06 2017 02:42:11

%S 0,1,2,13,112,1321,19296,335637,6764864,154946449,3973820800,

%T 112789880413,3509627281920,118790978349369,4344883388878592,

%U 170767066282574821,7177162988688031744,321206181612447781921,15250250261039350358016,765586309042945067185581

%N E.g.f.: sinh(x)/(1+LambertW(-x)).

%H G. C. Greubel, <a href="/A277463/b277463.txt">Table of n, a(n) for n = 0..385</a>

%F a(n) ~ sinh(exp(-1)) * n^n.

%t CoefficientList[Series[Sinh[x]/(1+LambertW[-x]), {x, 0, 25}], x] * Range[0, 25]!

%t Table[(1-(-1)^n + Sum[(1-(-1)^(n-k)) * Binomial[n,k] * k^k, {k, 1, n}])/2, {n, 0, 25}]

%o (PARI) x='x+O('x^50); concat([0], Vec(serlaplace(sinh(x)/(1 + lambertw(-x))))) \\ _G. C. Greubel_, Nov 05 2017

%Y Cf. A000312, A069856, A086331, A277461, A277464.

%K nonn

%O 0,3

%A _Vaclav Kotesovec_, Oct 16 2016

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)