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A230272 as a simple table

n a(n)
1 0
2 30
3 2318
4 115630
5 5524854
6 261026756
7 12303458948
8 580318201510
9 27360277625336
10 1290051189888410
11 60825460594828982
12 2867902503350552074
13 135220715263225157514
14 6375614702009353176064
15 300608248114662965834544 

[0,30,2318,115630,5524854,261026756,12303458948,
 580318201510,27360277625336,1290051189888410,
 60825460594828982,2867902503350552074,
 135220715263225157514,6375614702009353176064,
 300608248114662965834544]

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Last modified February 3 23:01 EST 2023. Contains 360045 sequences. (Running on oeis4.)