A034274 a(n)=f(n,n-1) where f is given in A034261.

5, 25, 119, 546, 2442, 10725, 46475, 199342, 848198, 3585946, 15080870, 63146500, 263432340, 1095517485, 4543460595, 18798494550, 77616288750, 319874637390, 1316106144210, 5407045011420, 22184521682700, 90910797617250, 372137346502974

Offset

1,1

Links

Table of n, a(n) for n=1..23.

Crossrefs

Sequence in context: A244828 A357598 A238808 * A110212 A344097 A268940

Adjacent sequences: A034271 A034272 A034273 * A034275 A034276 A034277

Keyword

nonn

Author

Clark Kimberling

Extensions

Corrected and extended Apr 21 2000 - N. J. A. Sloane.

Status

approved