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A229600 as a simple table

n a(n)
1 0
2 6
3 39
4 202
5 925
6 3924
7 15795
8 61182
9 230121
10 845640
11 3049407
12 10825650
13 37929141
14 131403708
15 450839115
16 1533738726
17 5178892545
18 17371743408
19 57926537559
20 192131864730
21 634207340493
22 2084322230820
23 6822862231779
24 22252658047182

[0,6,39,202,925,3924,15795,61182,230121,845640,
 3049407,10825650,37929141,131403708,450839115,
 1533738726,5178892545,17371743408,57926537559,
 192131864730,634207340493,2084322230820,
 6822862231779,22252658047182]

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Last modified December 2 09:50 EST 2023. Contains 367517 sequences. (Running on oeis4.)