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A269685 as a simple table

na(n)
14
216
364
4248
5944
63544
713168
848536
9177776
10647896
112351728
128508440
1330701168
14110537560
15397266544
161425629336
175109684848
1818295104472
1965449056880
20233970500888
21835908980336
222984966034520
2310654610339440
2438017445912984

[4,16,64,248,944,3544,13168,48536,177776,647896,
 2351728,8508440,30701168,110537560,397266544,
 1425629336,5109684848,18295104472,65449056880,
 233970500888,835908980336,2984966034520,
 10654610339440,38017445912984]