A026578 T(2n-1,n-2), T given by A026568.

1, 3, 13, 60, 225, 1148, 4235, 22296, 82425, 440308, 1634435, 8809736, 32819839, 178029138, 665162897, 3625521728, 13577768505

Offset

2,2

Links

Table of n, a(n) for n=2..18.

Crossrefs

Sequence in context: A331517 A340411 A074437 * A362596 A199641 A357151

Adjacent sequences: A026575 A026576 A026577 * A026579 A026580 A026581

Keyword

nonn

Author

Clark Kimberling

Status

approved