A038744 T(2n,n), array T as in A038738.

1, 5, 30, 188, 1201, 7756, 50439, 329625, 2161974, 14220038, 93740152, 619083041, 4094863900, 27120465023, 179822255181

Offset

0,2

Links

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

Formula

G.f.: (g-1)/((3*g-1)*(g^2-3*g+1)) where g*(1-g)^2 = x. - Mark van Hoeij, Nov 10 2011

Crossrefs

Sequence in context: A006773 A059273 A352175 * A098663 A265085 A158828

Adjacent sequences: A038741 A038742 A038743 * A038745 A038746 A038747

Keyword

nonn,more

Author

Clark Kimberling, May 02 2000

Status

approved