A108506 - OEIS

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A108506 as a simple table

n	a(n)
1	2
2	3
3	4
4	8
5	20
6	38
7	95
8	248
9	263
10	303
11	304
12	410
13	438
14	548
15	688
16	1074
17	1575
18	8364
19	9910
20	15910
21	37344

[2,3,4,8,20,38,95,248,263,303,304,410,438,548,688, 1074,1575,8364,9910,15910,37344]