A026939 Self-convolution of array T given by A026300.

1, 2, 8, 38, 195, 1042, 5710, 31824, 179534, 1022108, 5860360, 33791804, 195753023, 1138357170, 6641444190, 38855909550, 227876590746, 1339240440244, 7885425300976, 46506012931244, 274684745368371, 1624564306735434, 9619687284309090, 57024174275993142, 338368271349427938

Offset

0,2

Links

Table of n, a(n) for n=0..24.

Formula

a(n) = Sum_{k=0..n} A026300(n, k) * A026300(n, n-k). - Sean A. Irvine, Oct 17 2019

Crossrefs

Sequence in context: A059423 A112109 A345178 * A291088 A047098 A271934

Adjacent sequences: A026936 A026937 A026938 * A026940 A026941 A026942

Keyword

nonn

Author

Clark Kimberling

Extensions

More terms from Sean A. Irvine, Oct 17 2019

Status

approved