A222174 - OEIS

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A222174 as a simple table

n	a(n)
1	6
2	34
3	50
4	236
5	262
6	386
7	898
8	8362
9	26938
10	46594
11	80876
12	5244548
13	5462384
14	17062316
15	323987588
16	1162300834
17	1381439876

[6,34,50,236,262,386,898,8362,26938,46594,80876, 5244548,5462384,17062316,323987588,1162300834, 1381439876]