A086633 - OEIS

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

A086633

Row sums of triangle A086632.

1

1, 2, 6, 28, 159, 984, 6406, 43222, 299631, 2121721, 15282329, 111621879, 824812768, 6154988092, 46318172220, 351105380284, 2678473144801, 20548178604408, 158424726746707

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..18.

FORMULA

G.f.: A(x) = (1-2x)/(1-x)^3 + x*A(x)^3.

EXAMPLE

a(1)=1+1=2, a(2)=0+3+3=6, a(3)=-2+3+15+12=28, a(4)=-5-5+30+84+55=159.

CROSSREFS

Cf. A086632 (table).

Sequence in context: A326928 A277381 A184695 * A354311 A201950 A358265

Adjacent sequences: A086630 A086631 A086632 * A086634 A086635 A086636

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Jul 24 2003

STATUS

approved