A048118 a(n)=T(2n+1,n+1), where T is given by A048113.

0, 1, 2, 6, 18, 60, 204, 720, 2580, 9408, 34668, 129024, 483672, 1824768, 6919752, 26357976, 100778472, 386591304, 1487221056, 5735785176, 22170562656, 85866332760, 333151068528, 1294658562912, 5038469947992, 19634243736168

Offset

0,3

Comments

Apparently A048117 shifted once right. - R. J. Mathar, Jul 13 2025

Links

Table of n, a(n) for n=0..25.

Crossrefs

Sequence in context: A118677 A150043 A048117 * A004113 A150044 A108531

Adjacent sequences: A048115 A048116 A048117 * A048119 A048120 A048121

Keyword

nonn

Author

Clark Kimberling

Status

approved