A086624 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A086624

Main diagonal of square table A086623 of coefficients of f(x,y) that satisfies f(x,y) = (1-xy)/[(1-x)(1-y)] + xy*f(x,y)^2.

%I #3 Mar 30 2012 18:36:38

%S 1,1,4,19,100,570,3442,21685,141112,941990,6419174,44493000,312818326,

%T 2226155632,16008452202,116167346499,849724397580,6259403310366,

%U 46399703925202,345894094030552

%N Main diagonal of square table A086623 of coefficients of f(x,y) that satisfies f(x,y) = (1-xy)/[(1-x)(1-y)] + xy*f(x,y)^2.

%Y Cf. A086623 (table), A086625 (antidiagonal sums).

%K nonn

%O 0,3

%A _Paul D. Hanna_, Jul 24 2003