A032199 - OEIS

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A032199 as a simple table

n	a(n)
1	3
2	11
3	33
4	114
5	397
6	1524
7	5873
8	23492
9	95033
10	390262
11	1617513
12	6764338
13	28478813
14	120631428
15	513569941
16	2196269672
17	9429031893
18	40621573968
19	175544747673
20	760719000950
21	3304818106413
22	14389871196680

[3,11,33,114,397,1524,5873,23492,95033,390262, 1617513,6764338,28478813,120631428,513569941, 2196269672,9429031893,40621573968,175544747673, 760719000950,3304818106413,14389871196680]