0,2

Hankel transform is the Chernoff sequence A006939.

Table of n, a(n) for n=0..20.

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).

Sequence in context: A054872 A134664 A324133 * A068199 A189846 A189283

Adjacent sequences: A171445 A171446 A171447 * A171449 A171450 A171451

easy,nonn

Paul Barry, Dec 09 2009

approved