|
|
A032061
|
|
"BGK" (reversible, element, unlabeled) transform of 2,2,2,2,...
|
|
1
|
|
|
1, 2, 3, 6, 13, 22, 53, 104, 189, 420, 739, 1420, 2687, 5198, 8907, 15762, 30709, 51322, 92765, 153932, 275181, 478560, 806515, 1334656, 2222951, 3864914, 6233763, 10538622, 16896061, 27407110, 44632877, 74032352, 117178797
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
PROG
|
(PARI) seq(n)=[subst(serlaplace(y^0*p + polcoeff(p, 1)), y, 1)/2 | p <- Vec(y-1+prod(k=1, n, 1 + x^k*y + O(x*x^n))^2)] \\ Andrew Howroyd, Sep 13 2018
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|