A196586 - OEIS

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A196586 as a simple table

n	a(n)
1	3
2	65
3	698
4	7407
5	79091
6	839370
7	8980645
8	96049685
9	1025896374
10	10959530915
11	117114442817
12	1251366955956
13	13370045741595
14	142856645330593
15	1526402224409012
16	16309198590770683
17	174259846871282895

[3,65,698,7407,79091,839370,8980645,96049685, 1025896374,10959530915,117114442817,1251366955956, 13370045741595,142856645330593,1526402224409012, 16309198590770683,174259846871282895]