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A097593 as a simple table

n a(n)
0 0
1 0
2 1
3 4
4 22
5 138
6 998
7 8174
8 74898
9 759634
10 8451862
11 102381222
12 1341503546
13 18907621562
14 285259758366
15 4587192222958
16 78327809126818
17 1415429225667234
18 26987142531214118
19 541434621007942454
20 11402270678456333322

[0,0,1,4,22,138,998,8174,74898,759634,8451862,
 102381222,1341503546,18907621562,285259758366,
 4587192222958,78327809126818,1415429225667234,
 26987142531214118,541434621007942454,
 11402270678456333322]

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Last modified September 7 23:15 EDT 2024. Contains 375749 sequences. (Running on oeis4.)