A032214 - OEIS

%I #8 Jun 21 2018 17:17:14

%S 1,2,2,6,6,10,18,22,30,42,98,110,174,234,346,798,958,1458,2058,2990,

%T 4022,9234,10746,16774,22950,33682,44562,64182,126230,154778,229986,

%U 317766,452206,607290,851314,1120158,2130750,2567162

%N "DFK" (bracelet, size, unlabeled) transform of 2,2,2,2...

%H Andrew Howroyd, <a href="/A032214/b032214.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+prod(k=1, n, 1 + 2*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