A026706 T(2n,n-2), T given by A026703.

1, 8, 48, 261, 1358, 6907, 34683, 172827, 857077, 4237179, 20904293, 102987450, 506887889, 2493127016, 12256531946, 60233878032, 295941325816, 1453755559520, 7140344796458, 35067449154442, 172209614883062, 845642719001622

Offset

2,2

Links

Table of n, a(n) for n=2..23.

Crossrefs

Sequence in context: A002697 A285063 A026761 * A128734 A006321 A371620

Adjacent sequences: A026703 A026704 A026705 * A026707 A026708 A026709

Keyword

nonn

Author

Clark Kimberling

Status

approved