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A231909 as a simple table

n a(n)
1 3
2 17
3 137
4 948
5 6975
6 50323
7 366170
8 2657785
9 19313547
10 140303704
11 1019402743
12 7406378807
13 53811580170
14 390970164997
15 2840618194879
16 20638678936360
17 149951606887643
18 1089482683574507
19 7915704422510418
20 57512044237312433

[3,17,137,948,6975,50323,366170,2657785,19313547,
 140303704,1019402743,7406378807,53811580170,
 390970164997,2840618194879,20638678936360,
 149951606887643,1089482683574507,7915704422510418,
 57512044237312433]

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Last modified April 23 14:15 EDT 2024. Contains 371914 sequences. (Running on oeis4.)