A222139 - OEIS

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A222139 as a simple table

n	a(n)
1	16
2	676
3	28564
4	1206964
5	50999956
6	2154990196
7	91058563924
8	3847656513844
9	162581749707796
10	6869850581244916
11	290283793189916884
12	12265868026121849524
13	518291141165452870036
14	21900260661415244606836

[16,676,28564,1206964,50999956,2154990196, 91058563924,3847656513844,162581749707796, 6869850581244916,290283793189916884, 12265868026121849524,518291141165452870036, 21900260661415244606836]