|
%I #8 Jun 21 2018 17:17:43
%S 1,2,1,3,3,4,6,7,9,11,19,21,30,38,50,83,101,137,183,249,310,524,618,
%T 871,1125,1543,1959,2621,3934,4890,6582,8639,11417,14765,19499,24509,
%U 36486,44424,59698,76235,101481,127807,168747,212221,273294
%N "DFK" (bracelet, size, unlabeled) transform of 2,1,1,1...
%H Andrew Howroyd, <a href="/A032215/b032215.txt">Table of n, a(n) for n = 0..1000</a>
%H C. G. Bower, <a href="/transforms2.html">Transforms (2)</a>
%o (PARI) seq(n)={apply(p->subst(serlaplace(p/y + polcoeff(p,1) + polcoeff(p,2)), y, 1)/2, Vec(y-1 + (1+2*x*y)*prod(k=2, n, 1 + x^k*y + O(x*x^n))))} \\ _Andrew Howroyd_, Jun 21 2018
%K nonn
%O 0,2
%A _Christian G. Bower_
%E a(0)=1 prepended by _Andrew Howroyd_, Jun 21 2018
|
