A098431 Constant terms of polynomials in A098277.

1, 2, 12, 168, 4272, 171168, 9915072, 783454848, 80965577472, 10599312542208, 1714108476337152, 335566486059952128, 78206210287187177472, 21396344618478777704448, 6790389880757556630700032

Offset

0,2

Links

Table of n, a(n) for n=0..14.

Formula

G.f. 1/G(0) where G(k) = 1 - x*(2*k+1)*(2*k+2)/(1 - (2*k+2)^2*x/G(k+1)); (continued fraction, 2-step). - Sergei N. Gladkovskii, Aug 11 2012

Crossrefs

Sequence in context: A255163 A052728 A052729 * A231085 A059522 A271857

Adjacent sequences: A098428 A098429 A098430 * A098432 A098433 A098434

Keyword

nonn

Author

Ralf Stephan, Sep 07 2004

Status

approved