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A321586 as a simple table

n a(n)
0 1
1 1
2 4
3 26
4 204
5 1992
6 23336
7 318080
8 4948552
9 86550424
10 1681106080
11 35904872576
12 836339613984
13 21100105791936
14 573194015723840
15 16681174764033728
16 517768654898701120
17 17074080118403865856
18 596117945858272441408
19 21967609729338776864384
20 852095613819396775627200

[1,1,4,26,204,1992,23336,318080,4948552,86550424,
 1681106080,35904872576,836339613984,
 21100105791936,573194015723840,16681174764033728,
 517768654898701120,17074080118403865856,
 596117945858272441408,21967609729338776864384,
 852095613819396775627200]

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Last modified July 3 04:26 EDT 2024. Contains 373965 sequences. (Running on oeis4.)