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A253217 as a simple table

n a(n)
1 0
2 0
3 1
4 19
5 268
6 3568
7 47698
8 649712
9 9023385
10 127419681
11 1823918697
12 26398702645
13 385582981615
14 5674890516295
15 84060883775765
16 1252066289632643
17 18738613233957420
18 281620474177057788
19 4248088188086420832

[0,0,1,19,268,3568,47698,649712,9023385,127419681,
 1823918697,26398702645,385582981615,5674890516295,
 84060883775765,1252066289632643,18738613233957420,
 281620474177057788,4248088188086420832]

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Last modified May 30 08:26 EDT 2024. Contains 372962 sequences. (Running on oeis4.)