A026894 T(2n,n+1), T given by A026780.

1, 5, 23, 106, 496, 2361, 11425, 56128, 279530, 1409242, 7182570, 36965292, 191896092, 1003889999, 5288020783, 28026601758, 149362212188, 799947847992, 4303496405324, 23245282077346, 126020035603358, 685477891161324

Offset: 1

Author

Clark Kimberling

Keywords

• nonn