A027201 a(n) = self-convolution of row n of array T given by A026714.

1, 2, 11, 52, 269, 1380, 7333, 37772, 203145, 1044234, 5643127, 28956878, 156801451, 803721390, 4356085375, 22313412784, 120988175101, 619498949770, 3359774186871, 17198982565682, 93286822081343, 477471877247444, 2589948726805741, 13254933617607980

Offset

0,2

Links

Table of n, a(n) for n=0..23.

Maple

A027201 := proc(n)
    add( A026714(n, k)*A026714(n, n-k), k=0..n) ;
end proc:
seq(A027201(n), n=0..30) ; # R. J. Mathar, Oct 21 2019

Crossrefs

Sequence in context: A181290 A026996 A110308 * A026933 A346925 A052171

Adjacent sequences: A027198 A027199 A027200 * A027202 A027203 A027204

Keyword

nonn

Author

Clark Kimberling

Extensions

NAME corrected by Sean A. Irvine, Oct 21 2019

More terms from Ray Chandler, Oct 22 2019

Status

approved