A125075 - OEIS

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A125075 as a simple table

n	a(n)
1	10
2	26
3	57
4	130
5	304
6	720
7	1653
8	3933
9	9489
10	22954
11	55860
12	136705
13	337951
14	843306
15	2110436
16	5311239
17	13432130
18	34143472
19	87069907
20	222858046
21	572210219
22	1473600000
23	3804733479

[10,26,57,130,304,720,1653,3933,9489,22954,55860, 136705,337951,843306,2110436,5311239,13432130, 34143472,87069907,222858046,572210219,1473600000, 3804733479]