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A301952 as a simple table

n a(n)
1 0
2 5
3 20
4 123
5 680
6 4070
7 23565
8 138014
9 805249
10 4704141
11 27469522
12 160428571
13 936897912
14 5471539885
15 31953953498
16 186612354231
17 1089822896327
18 6364606387628
19 37169536347339
20 217071469820879
21 1267705419106309

[0,5,20,123,680,4070,23565,138014,805249,4704141,
 27469522,160428571,936897912,5471539885,
 31953953498,186612354231,1089822896327,
 6364606387628,37169536347339,217071469820879,
 1267705419106309]

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Last modified April 17 02:52 EDT 2024. Contains 371756 sequences. (Running on oeis4.)