A056402 - OEIS

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A056402 as a simple table

n	a(n)
1	1
2	1
3	3
4	8
5	13
6	65
7	67
8	322
9	573
10	2495
11	2979
12	23294
13	22217
14	133081
15	300947
16	909050
17	1345633
18	10766559
19	10762819
20	72954582
21	145362861
22	523026545
23	713213955
24	5893685746
25	7060765719
26	35303760331

[1,1,3,8,13,65,67,322,573,2495,2979,23294,22217, 133081,300947,909050,1345633,10766559,10762819, 72954582,145362861,523026545,713213955,5893685746, 7060765719,35303760331]