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A009981 as a simple table

n a(n)
0 1
1 37
2 1369
3 50653
4 1874161
5 69343957
6 2565726409
7 94931877133
8 3512479453921
9 129961739795077
10 4808584372417849
11 177917621779460413
12 6582952005840035281
13 243569224216081305397
14 9012061295995008299689

[1,37,1369,50653,1874161,69343957,2565726409,
 94931877133,3512479453921,129961739795077,
 4808584372417849,177917621779460413,
 6582952005840035281,243569224216081305397,
 9012061295995008299689]

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Last modified November 20 05:07 EST 2019. Contains 329323 sequences. (Running on oeis4.)