A026868 T(2n+1,n+4), T given by A026747.

1, 10, 67, 380, 1976, 9771, 46845, 220232, 1022498, 4710021, 21593848, 98750485, 451158834, 2061525163, 9429060852, 43193760271, 198255105055, 912011899565, 4205605922556, 19442627224940, 90115768761346, 418762733418510

Offset: 3

Author

Clark Kimberling

Keywords

• nonn

Crossrefs

Cf. A026747.