A263156 - OEIS

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A263156 as a simple table

n	a(n)
1	23966
2	323572
3	323572
4	4345200
5	8931088
6	4345200
7	63755349
8	245494656
9	245494656
10	63755349
11	913603171
12	7221845601
13	13895461376
14	7221845601
15	913603171
16	12918908831
17	207234582577
18	818220821498
19	818220821498

[23966,323572,323572,4345200,8931088,4345200, 63755349,245494656,245494656,63755349,913603171, 7221845601,13895461376,7221845601,913603171, 12918908831,207234582577,818220821498, 818220821498]