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A293356 as a simple table

na(n)
12
220
340
448
568
6176
7212
8304
9328
10944
111360
121712
131888
142320
152344
162864
174240
187120
197888
207984
218448
228960
2311920
2412032
2514416
2614592
2715536
2817492
2920224
3021520
3123984
3224208
3324592
3425904
3526112
3628160
3729440
3830464
3934560
4035920
4136352
4240528
4341296

[2,20,40,48,68,176,212,304,328,944,1360,1712,1888,
 2320,2344,2864,4240,7120,7888,7984,8448,8960,
 11920,12032,14416,14592,15536,17492,20224,21520,
 23984,24208,24592,25904,26112,28160,29440,30464,
 34560,35920,36352,40528,41296]