A025188 a(n) = T(2n,n+1), where T is the array defined in A025177.

2, 10, 60, 343, 1968, 11319, 65351, 378690, 2201772, 12839896, 75076505, 440016174, 2584289200, 15206283135, 89625150180, 529040216175, 3127061645796, 18506252646420, 109644576096980, 650280444390382

Offset

1,1

Links

Table of n, a(n) for n=1..20.

Crossrefs

Sequence in context: A246480 A303361 A026161 * A114620 A173613 A341924

Adjacent sequences: A025185 A025186 A025187 * A025189 A025190 A025191

Keyword

nonn

Author

Clark Kimberling

Status

approved