A027019 a(n) = A027011(2n+1, n+4).

1, 11, 267, 2620, 16305, 77040, 303553, 1055231, 3358268, 10039132, 28714818, 79649852, 216360858, 579601543, 1538746237, 4061993928, 10685640859, 28051744332, 73551897971, 192720956939, 504774508726, 1321827638248, 3461013838244, 9061623069576, 23724397134644

Offset: 3

Author

Clark Kimberling

Keywords

• nonn

Extensions

More terms from Sean A. Irvine, Oct 21 2019