A026941 a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026300.

2, 17, 138, 1084, 8527, 67409, 536843, 4307147, 34801715, 283030274, 2315438399, 19044040677, 157394654650, 1306557744949, 10889306772743, 91085757952639, 764439327119422, 6435130001113495, 54323350723804917, 459764825016808251, 3900499696992039543

Offset

2,1

Links

Table of n, a(n) for n=2..22.

Crossrefs

Sequence in context: A201782 A132433 A037557 * A037493 A037573 A037741

Adjacent sequences: A026938 A026939 A026940 * A026942 A026943 A026944

Keyword

nonn

Author

Clark Kimberling

Extensions

More terms from Sean A. Irvine, Oct 17 2019

Status

approved