A118129 - OEIS

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A118129 as a simple table

n	a(n)
1	6
2	14
3	20
4	424
5	1042
6	8290
7	20802
8	21644
9	440512
10	548008
11	749171
12	4366390
13	5378548
14	9850174
15	17930596
16	36158854
17	130427194
18	407305710
19	3077094752
20	93416875260

[6,14,20,424,1042,8290,20802,21644,440512,548008, 749171,4366390,5378548,9850174,17930596,36158854, 130427194,407305710,3077094752,93416875260]