A055222 T(2n+6,n), array T as in A055216.

1, 8, 45, 211, 891, 3510, 13170, 47672, 167898, 578769, 1961103, 6552549, 21641343, 70784235, 229620285, 739640331, 2368022638, 7541358405, 23905443556, 75468582776, 237388273398, 744299007994, 2326899224352

Offset

0,2

Links

Table of n, a(n) for n=0..22.

Crossrefs

Sequence in context: A273296 A097555 A273267 * A273305 A026015 A002696

Adjacent sequences: A055219 A055220 A055221 * A055223 A055224 A055225

Keyword

nonn

Author

Clark Kimberling, May 07 2000

Status

approved