A054539 A000016 / 2.

1, 1, 2, 3, 5, 8, 15, 26, 47, 86, 158, 293, 548, 1024, 1928, 3643, 6899, 13108, 24970, 47663, 91181, 174768, 335546, 645278, 1242767, 2396746, 4628198, 8947868, 17318417, 33554432, 65075294, 126322568, 245426708

Offset: 3

Author

N. J. A. Sloane, Apr 10 2000

Keywords

• nonn

Crossrefs

A063776(n) / 4, n>2.