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A281930 as a simple table

n a(n)
1 0
2 0
3 1
4 6
5 33
6 166
7 792
8 3654
9 16455
10 72774
11 317367
12 1368608
13 5848140
14 24799548
15 104488541
16 437818374
17 1825747245
18 7581746154
19 31368531456
20 129358242306
21 531886946515
22 2181210602118
23 8923564277475
24 36428064156772
25 148413344768244

[0,0,1,6,33,166,792,3654,16455,72774,317367,
 1368608,5848140,24799548,104488541,437818374,
 1825747245,7581746154,31368531456,129358242306,
 531886946515,2181210602118,8923564277475,
 36428064156772,148413344768244]

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)