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A146669 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 7
7 21
8 49
9 219
10 1317
11 9715
12 80153
13 817961
14 10735885
15 177805125
16 3599071193
17 90866799531
18 2886601451049
19 113383289044153
20 5503065770566291 

[1,1,1,1,1,7,21,49,219,1317,9715,80153,817961,
 10735885,177805125,3599071193,90866799531,
 2886601451049,113383289044153,5503065770566291]

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Last modified April 24 15:57 EDT 2024. Contains 371961 sequences. (Running on oeis4.)