A032001 - OEIS

%I #8 Sep 13 2018 18:27:31

%S 1,2,1,13,17,41,775,1401,5577,17161,650231,1451429,7098723,31949841,

%T 154314217,9549744787,26332319993,148700630777,751749919063,

%U 4928035762245,28171233908619,3075951573975973,9866703399859373,65413443830714351,364017353336405579

%N "AFJ" (ordered, size, labeled) transform of 2,1,1,1,...

%H Andrew Howroyd, <a href="/A032001/b032001.txt">Table of n, a(n) for n = 0..200</a>

%H C. G. Bower, <a href="/transforms2.html">Transforms (2)</a>

%o (PARI) seq(n)=[subst(serlaplace(y^0*p),y,1) | p <- Vec(serlaplace((1 + 2*x*y)*prod(k=2, n, 1 + x^k*y/k! + O(x*x^n))))] \\ _Andrew Howroyd_, Sep 13 2018

%K nonn

%O 0,2

%A _Christian G. Bower_

%E a(0)=1 prepended and terms a(23) and beyond from _Andrew Howroyd_, Sep 13 2018