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A228808 as a simple table

n a(n)
0 1
1 2
2 4
3 20
4 296
5 10067
6 927100
7 219541877
8 110728186648
9 137502766579907
10 448577320868198789
11 3169529341990169816462
12 51243646781214826181569316
13 2201837465728010770618930322223
14 215520476721579201896200887266792583
15 45634827026091489574547858030506357191920

[1,2,4,20,296,10067,927100,219541877,110728186648,
 137502766579907,448577320868198789,
 3169529341990169816462,51243646781214826181569316,
 2201837465728010770618930322223,
 215520476721579201896200887266792583,
 45634827026091489574547858030506357191920]

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Last modified September 11 16:17 EDT 2024. Contains 375836 sequences. (Running on oeis4.)