A006100 - OEIS

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A006100 as a simple table

n	a(n)
2	1
3	13
4	130
5	1210
6	11011
7	99463
8	896260
9	8069620
10	72636421
11	653757313
12	5883904390
13	52955405230
14	476599444231
15	4289397389563
16	38604583680520
17	347441274648040
18	3126971536402441

[1,13,130,1210,11011,99463,896260,8069620, 72636421,653757313,5883904390,52955405230, 476599444231,4289397389563,38604583680520, 347441274648040,3126971536402441]

[1,13,130,1210,11011,99463,896260,8069620,
 72636421,653757313,5883904390,52955405230,
 476599444231,4289397389563,38604583680520,
 347441274648040,3126971536402441]