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A147025 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 3
9 15
10 21
11 45
12 77
13 273
14 569
15 2606
16 6661
17 31883
18 89951
19 535540
20 1839325
21 13532589
22 55467031
23 467306429
24 2229430591
25 22257836225 

[1,1,1,1,1,1,1,3,15,21,45,77,273,569,2606,6661,
 31883,89951,535540,1839325,13532589,55467031,
 467306429,2229430591,22257836225]

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)