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A202947 as a simple table

n a(n)
0 1
1 2
2 22
3 980
4 161638
5 100318460
6 240313495420
7 2251316821283048
8 83005840299778004614
9 12089092134684999622076396
10 6972054121242613685463168904468
11 15950722005044706228925521886595357720
12 144954811888851643278920459489891540357638876

[1,2,22,980,161638,100318460,240313495420,
 2251316821283048,83005840299778004614,
 12089092134684999622076396,
 6972054121242613685463168904468,
 15950722005044706228925521886595357720,
 144954811888851643278920459489891540357638876]

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Last modified June 12 16:55 EDT 2021. Contains 344959 sequences. (Running on oeis4.)