A027003 a(n) = A026998(2n, n+4).

1, 64, 901, 6821, 36425, 155793, 573382, 1899933, 5844446, 17056486, 47974934, 131553646, 354615679, 945220982, 2501450971, 6590435731, 17316698039, 45428211431, 119066290172, 311909267867, 816853717452, 2138914514428, 5600243896572, 14662288678348, 38387242941837

Offset

4,2

Links

Table of n, a(n) for n=4..28.

Crossrefs

Sequence in context: A292028 A306613 A185368 * A265620 A358861 A253133

Adjacent sequences: A027000 A027001 A027002 * A027004 A027005 A027006

Keyword

nonn

Author

Clark Kimberling

Extensions

More terms from Sean A. Irvine, Oct 21 2019

Status

approved