OFFSET
1,1
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..200
C. G. Bower, Transforms (2)
FORMULA
Doubles (index 2+) under "BIK" (reversible, indistinct, unlabeled) transform.
PROG
(PARI)
BIK(p)={(1/(1-p) + (1+p)/subst(1-p, x, x^2))/2}
seq(n)={my(p=2*x); for(i=2, n, p+=x^i*polcoeff(BIK(p) + O(x*x^i), i)); Vecrev(p/x)} \\ Andrew Howroyd, Aug 30 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved