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A157512 as a simple table

na(n)
12
28
316
426
538
652
770
890
9112
10136
11162
12190
13220
14252
15286
16324
17364
18406
19450
20496
21544
22594
23646
24700
25756
26814
27874
28936
291002
301070
311140
321212
331286
341362
351440
361520
371602
381686
391772
401860
411950
422042
432136
442232
452330
462432
472536

[2,8,16,26,38,52,70,90,112,136,162,190,220,252,
 286,324,364,406,450,496,544,594,646,700,756,814,
 874,936,1002,1070,1140,1212,1286,1362,1440,1520,
 1602,1686,1772,1860,1950,2042,2136,2232,2330,2432,
 2536]