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A304250 as a simple table

na(n)
14
28
316
432
536
664
7128
8144
9216
10256
11324
12512
13576
14900
151024
161296
171728
182048
192304
202916
213600
224096
235184
245832
257776
268100
278192
289216
2911664
3013824
3114400
3216384
3320736
3422500
3526244
3627000
3732400
3832768
3936864
4044100
4146656
4257600
4365536
4472900

[4,8,16,32,36,64,128,144,216,256,324,512,576,900,
 1024,1296,1728,2048,2304,2916,3600,4096,5184,5832,
 7776,8100,8192,9216,11664,13824,14400,16384,20736,
 22500,26244,27000,32400,32768,36864,44100,46656,
 57600,65536,72900]