A024499 a(n) = [ C(2n,n)/(n-1) ].

6, 10, 23, 63, 184, 572, 1838, 6077, 20528, 70543, 245832, 866716, 3085892, 11079822, 40072026, 145850388, 533831488, 1963625766, 7255080464, 26912893722, 100195188748, 374246851254, 1402069725352, 5267108601573, 19836741317924

Offset

2,1

Links

Table of n, a(n) for n=2..26.

Crossrefs

Sequence in context: A212161 A132994 A199885 * A143236 A107306 A108899

Adjacent sequences: A024496 A024497 A024498 * A024500 A024501 A024502

Keyword

nonn

Author

Clark Kimberling

Status

approved