A233218 - OEIS

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A233218 as a simple table

n	a(n)
1	3
2	23
3	376
4	7222
5	147019
6	3054973
7	63927526
8	1340889772
9	28147567369
10	591021089923
11	12410898114676
12	260625046992322
13	5473099292927719
14	114934898294104873
15	2413631556174561826
16	50686253523654314872

[3,23,376,7222,147019,3054973,63927526,1340889772, 28147567369,591021089923,12410898114676, 260625046992322,5473099292927719, 114934898294104873,2413631556174561826, 50686253523654314872]