OFFSET
0,2
COMMENTS
Hankel transform is the Chernoff sequence A006939.
FORMULA
G.f.: 1/(1-2x/(1-x/(1-3x/(1-x/(1-5x/(1-x/(1-7x/(1-x/(1-11x/(1-.... (continued fraction);
G.f.: 1/(1-2x-2x^2/(1-4x-3x^2/(1-6x-5x^2/(1-8x-7x^2/(1-12x-11x^2/(1- ... (continued fraction).
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Dec 09 2009
STATUS
approved