A046326 - OEIS

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A046326 as a simple table

n	a(n)
1	9699690
2	111546435
3	1078282205
4	6685349671
5	35336848261
6	131710070791
7	435656388001
8	1204461778591
9	3359814435017
10	8618654420261
11	18128893780549
12	39181802686993
13	75186702453419
14	133869006807307
15	245945384599471

[9699690,111546435,1078282205,6685349671, 35336848261,131710070791,435656388001, 1204461778591,3359814435017,8618654420261, 18128893780549,39181802686993,75186702453419, 133869006807307,245945384599471]