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A004212 as a simple table

n a(n)
0 1
1 1
2 4
3 19
4 109
5 742
6 5815
7 51193
8 498118
9 5296321
10 60987817
11 754940848
12 9983845261
13 140329768789
14 2087182244308
15 32725315072135
16 539118388883449
17 9304591246975030
18 167804098493079547
19 3155000165773280893

[1,1,4,19,109,742,5815,51193,498118,5296321,
 60987817,754940848,9983845261,140329768789,
 2087182244308,32725315072135,539118388883449,
 9304591246975030,167804098493079547,
 3155000165773280893]

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Last modified April 24 19:06 EDT 2024. Contains 371962 sequences. (Running on oeis4.)