A134147 Row sums of triangle A134146 and partition array A134145 (M3(3)/M3).

1, 4, 19, 133, 1123, 12085, 151765, 2236876, 37373866, 702393424, 14611910794, 333811635793, 8298224157103, 223061783080075, 6444694333816630, 199168434836797921, 6555131451981351961, 228906927287899911709

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Formula

a(n) = Sum_{m=1..n} A134146(n,m), n>=1.

a(n) = Sum_{k=1..p(n)} A134145(n,k), with p(n) = A000041(n) (number of partitions of n).

Crossrefs

Cf. A000041, A134148 (alternating row sums of triangle A134146).

Sequence in context: A135742 A144273 A127060 * A220066 A157303 A007788

Adjacent sequences: A134144 A134145 A134146 * A134148 A134149 A134150

Keyword

nonn,easy

Author

Wolfdieter Lang, Nov 13 2007

Status

approved