A119621 - OEIS

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A119621 as a simple table

n	a(n)
3	1
4	7
5	479
6	413
7	63397
8	514639
9	10410343
10	1411432849
11	6620481151
12	6454614084953
13	421950627598601
14	8222379104323
15	3989306589962303
16	443539778381788333
17	148124338024667050948691
18	143366612154851808752629

[1,7,479,413,63397,514639,10410343,1411432849, 6620481151,6454614084953,421950627598601, 8222379104323,3989306589962303,443539778381788333, 148124338024667050948691,143366612154851808752629]