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A323101 as a simple table

na(n)
12
24
36
414
516
632
740
874
9110
10134
11252
12280
13306
14356
15410
16692
17760
181220
191286
201742
212060
222514
233632
247104
257376
2610220
2710980
2818914
2920472
3020676
3122456
3224122
3340834
3442110
3544182
3644814
3745852
3860030
3967826
4068360
4187434
4294386
43158774
44180520

[2,4,6,14,16,32,40,74,110,134,252,280,306,356,410,
 692,760,1220,1286,1742,2060,2514,3632,7104,7376,
 10220,10980,18914,20472,20676,22456,24122,40834,
 42110,44182,44814,45852,60030,67826,68360,87434,
 94386,158774,180520]