A347913 - OEIS

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A347913 as a simple table

n	a(n)
0	1
1	1
2	2
3	2
4	7
5	9
6	29
7	47
8	144
9	264
10	747
11	1531
12	4147
13	9063
14	23744
15	54522
16	140223
17	332033
18	845111
19	2045007
20	5176880
21	12713772
22	32115727
23	79676437
24	201227865
25	502852973

[1,1,2,2,7,9,29,47,144,264,747,1531,4147,9063, 23744,54522,140223,332033,845111,2045007,5176880, 12713772,32115727,79676437,201227865,502852973]