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A087650 as a simple table

n a(n)
0 1
1 0
2 2
3 3
4 12
5 40
6 163
7 714
8 3426
9 17721
10 98254
11 580316
12 3633281
13 24011156
14 166888166
15 1216070379
16 9264071768
17 73600798036
18 608476008123
19 5224266196934
20 46499892038438
21 428369924118313
22 4078345814329010
23 40073660040755336

[1,0,2,3,12,40,163,714,3426,17721,98254,580316,
 3633281,24011156,166888166,1216070379,9264071768,
 73600798036,608476008123,5224266196934,
 46499892038438,428369924118313,4078345814329010,
 40073660040755336]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)