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A075508

Shifts one place left under 9th-order binomial transform.

1, 1, 10, 109, 1351, 19612, 333451, 6493069, 141264820, 3376695763, 87799365343, 2465959810690, 74353064138749, 2393123710957813, 81812390963020066, 2958191064076428793, 112727516544416978299, 4513118224822056822772, 189305466502867876489519

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OFFSET

0,3

COMMENTS

Previous name was: Row sums of triangle A075504 (for n>=1).

LINKS

Muniru A Asiru, Table of n, a(n) for n = 0..108

FORMULA

a(n) = Sum_{m=0..n} 9^(n-m)*S2(n,m), with S2(n,m) = A008277(n,m) (Stirling2).

E.g.f.: exp((exp(9*x)-1)/9).

O.g.f.: Sum_{k>=0} x^k/Product_{j=1..k} (1 - 9*j*x). - Ilya Gutkovskiy, Mar 20 2018

a(n) ~ 9^n * n^n * exp(n/LambertW(9*n) - 1/9 - n) / (sqrt(1 + LambertW(9*n)) * LambertW(9*n)^n). - Vaclav Kotesovec, Jul 15 2021

MAPLE

[seq(factorial(k)*coeftayl(exp((exp(9*x)-1)/9), x = 0, k), k=0..20)]; # Muniru A Asiru, Mar 20 2018

MATHEMATICA

Table[9^n BellB[n, 1/9], {n, 0, 20}] (* Vladimir Reshetnikov, Oct 20 2015 *)

PROG

(GAP) List([0..20], n->Sum([0..n], m->9^(n-m)*Stirling2(n, m))); # Muniru A Asiru, Mar 20 2018

CROSSREFS

Shifts one place left under k-th order binomial transform, k=1..10: A000110, A004211, A004212, A004213, A005011, A005012, A075506, A075507, A075508, A075509.

Sequence in context: A082181 A190919 A095740 * A095176 A061749 A348466

Adjacent sequences: A075505 A075506 A075507 * A075509 A075510 A075511

KEYWORD

nonn,easy,eigen

AUTHOR

Wolfdieter Lang, Oct 02 2002

EXTENSIONS

a(0)=1 inserted and new name by Vladimir Reshetnikov, Oct 20 2015

STATUS

approved

URL: https://oeis.org/A075508

⇱ A075508 - OEIS