A165874 - OEIS

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A165874 as a simple table

n	a(n)
0	1
1	14
2	182
3	2366
4	30758
5	399854
6	5198102
7	67575326
8	878479238
9	11420230094
10	148462991131
11	1930018883520
12	25090245470472
13	326173190917392
14	4240251479342424
15	55123269197863776
16	716602499135588520

[1,14,182,2366,30758,399854,5198102,67575326, 878479238,11420230094,148462991131,1930018883520, 25090245470472,326173190917392,4240251479342424, 55123269197863776,716602499135588520]