A047134 T(n,n-2), array T as in A047130.

1, 3, 9, 28, 76, 235, 768, 1679, 5564, 19613, 126070, 437604, 1610354, 6015427, 27167487, 104861750, 403189070, 1550582656, 6369655714, 25112303442, 98241919002, 383342448413, 1531690132421, 6058160780203, 23859853900666

Offset: 2

Author

Clark Kimberling

Keywords

• nonn

Extensions

Definition corrected by Georg Fischer, Jan 20 2020