A218813 - OEIS

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A218813 as a simple table

n	a(n)
1	1
2	225
3	3843
4	63499
5	1015637
6	16247233
7	259935681
8	4158793313
9	66538666069
10	1064587366577
11	17032902497577
12	272518501016117
13	4360168964895763
14	69760670600929839
15	1116138204971281197
16	17857690900483942101

[1,225,3843,63499,1015637,16247233,259935681, 4158793313,66538666069,1064587366577, 17032902497577,272518501016117,4360168964895763, 69760670600929839,1116138204971281197, 17857690900483942101]