OFFSET
0,5
COMMENTS
Hankel transform is A167753.
FORMULA
G.f.: 1/(1-x^2/(1-x/(1-x^2/(1-x^3/(1-x^4/(1-...)))))) (continued fraction);
G.f.: 1/(1-x^2*f(x)), f(x) the g.f. of A005169.
EXAMPLE
G.f. = 1 + x^2 + x^3 + 2*x^4 + 4*x^5 + 7*x^6 + 14*x^7 + 27*x^8 + 52*x^9 + ...
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Nov 10 2009
STATUS
approved