A026112 a(n) = T(2n,n), where T is the array defined in A026105.

1, 1, 6, 30, 160, 873, 4851, 27300, 155115, 887910, 5112767, 29582886, 171857127, 1001762125, 5856231825, 34320863160, 201579530004, 1186231850298, 6992515244280, 41281814341780, 244049819182260, 1444558452300909, 8560106124666867, 50777065370076660

Offset: 0

Author

Clark Kimberling

Keywords

• nonn

Crossrefs

Bisection of A026117.

Extensions

More terms from Alois P. Heinz, Sep 16 2019