A094616 Row sums of A094615.

1, 8, 35, 126, 417, 1324, 4111, 12602, 38333, 116040, 350187, 1054678, 3172249, 9533156, 28632263, 85962354, 258018165, 774316672, 2323474339, 6971471630, 20916512081, 62753730588, 188269580415, 564825518506, 1694510109997

Offset: 0

Author

Clark Kimberling, May 14 2004

Keywords

• nonn

Crossrefs

Cf. A094615.

Programs

PARI

a(n)=2*3^(n+1)-2^(n+2)-n-1

Formula

a(n) = 2(a(n-1)+3^n)+n-1, a(0)=1.

a(n) = 2*3^(n+1)-2^(n+2)-n-1. - Benoit Cloitre, May 23 2004