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A251686 as a simple table

n a(n)
0 1
1 1
2 8
3 100
4 1556
5 27260
6 515510
7 10284094
8 213433728
9 4566363088
10 100082133066
11 2236952393302
12 50817223209451
13 1170319824912699
14 27268900054818390
15 641812268110993694
16 15239341125950643462
17 364655982858022960206
18 8785745372509009963892
19 212976842702489760621536

[1,1,8,100,1556,27260,515510,10284094,213433728,
 4566363088,100082133066,2236952393302,
 50817223209451,1170319824912699,27268900054818390,
 641812268110993694,15239341125950643462,
 364655982858022960206,8785745372509009963892,
 212976842702489760621536]

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Last modified May 9 01:26 EDT 2024. Contains 372341 sequences. (Running on oeis4.)