A089448 Diagonal of square table A089447, which lists the coefficients of x^n*y^k in f(x,y) that satisfies: f(x,y) = g(x,y) + xy*f(x,y)^4 and where g(x,y) satisfies: 1 + (x+y-1)*g(x,y) + xy*g(x,y)^2 = 0.

1, 4, 48, 841, 18004, 435654, 11427992, 317112363, 9167951752, 273436829602, 8357069773840, 260498528992976, 8252868865615952, 265043778330385821, 8611226621063270068, 282587565659572959007, 9354553949064125991864

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Crossrefs

Cf. A089447 (table), A089449 (antidiagonal sums), A002293.

Sequence in context: A371658 A328183 A047711 * A167141 A322296 A360484

Adjacent sequences: A089445 A089446 A089447 * A089449 A089450 A089451

Keyword

nonn

Author

Paul D. Hanna, Nov 02 2003

Status

approved