cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A279642 Exponential transform of the ninth powers A001017.

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%I A279642 #5 Dec 16 2016 14:44:35
%S A279642 1,1,513,21220,1130381,108174916,8543324917,800980035472,
%T A279642 88064461381913,9832425683734288,1199454069536074601,
%U A279642 158528649288125900224,21925314644323181005477,3213026006947537325856832,497390236613387084643144029,80481275337746709959509939456
%N A279642 Exponential transform of the ninth powers A001017.
%H A279642 Alois P. Heinz, <a href="/A279642/b279642.txt">Table of n, a(n) for n = 0..348</a>
%F A279642 E.g.f.: exp(exp(x)*(x^9+36*x^8+462*x^7+2646*x^6+6951*x^5+7770*x^4 +3025*x^3 +255*x^2+x)).
%p A279642 a:= proc(n) option remember; `if`(n=0, 1,
%p A279642       add(binomial(n-1, j-1)*j^9*a(n-j), j=1..n))
%p A279642     end:
%p A279642 seq(a(n), n=0..25);
%Y A279642 Column k=9 of A279636.
%Y A279642 Cf. A001017.
%K A279642 nonn
%O A279642 0,3
%A A279642 _Alois P. Heinz_, Dec 16 2016