A087482 - OEIS

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A087482 as a simple table

n	a(n)
1	2
2	2
3	2
4	6
5	8
6	21
7	34
8	84
9	150
10	331
11	614
12	1417
13	2638
14	5508
15	10874
16	23437
17	44862
18	95887
19	185238
20	390297
21	765510
22	1557427
23	3043918
24	6525948
25	12706892
26	25836122
27	51135384
28	105070336
29	206266718
30	426254492

[2,2,2,6,8,21,34,84,150,331,614,1417,2638,5508, 10874,23437,44862,95887,185238,390297,765510, 1557427,3043918,6525948,12706892,25836122, 51135384,105070336,206266718,426254492]