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A331618 as a simple table

n a(n)
0 1
1 1
2 3
3 15
4 97
5 785
6 7523
7 83615
8 1053281
9 14838177
10 230832867
11 3929944623
12 72633052545
13 1447981700529
14 30960823851267
15 706676217730239
16 17145815895371073
17 440594781536265537
18 11952178787661839427
19 341291300477569866831
20 10231558345117929439521 

[1,1,3,15,97,785,7523,83615,1053281,14838177,
 230832867,3929944623,72633052545,1447981700529,
 30960823851267,706676217730239,17145815895371073,
 440594781536265537,11952178787661839427,
 341291300477569866831,10231558345117929439521]

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Last modified April 25 09:56 EDT 2024. Contains 371967 sequences. (Running on oeis4.)