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A269651 as a simple table

na(n)
14
216
364
4253
5988
63816
714596
855344
9208196
10777582
112885120
1210640607
1339027196
14142415244
15517252820
161870499543
176736838192
1824172420350
1986428990624
20308016010824
211094338584760
223876828265788
2313696906252336

[4,16,64,253,988,3816,14596,55344,208196,777582,
 2885120,10640607,39027196,142415244,517252820,
 1870499543,6736838192,24172420350,86428990624,
 308016010824,1094338584760,3876828265788,
 13696906252336]