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A289991 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 7
6 35
7 181
8 1027
9 6551
10 47356
11 383353
12 3439508
13 33796286
14 360254030
15 4132780425
16 50700507116
17 661702767423
18 9148018231984
19 133481943863634
20 2049205561735698
21 33008193951255524
22 556509843849858317
23 9799223447550907197
24 179855583136712491494

[0,0,0,1,7,35,181,1027,6551,47356,383353,3439508,
 33796286,360254030,4132780425,50700507116,
 661702767423,9148018231984,133481943863634,
 2049205561735698,33008193951255524,
 556509843849858317,9799223447550907197,
 179855583136712491494]

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)