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A155506 as a simple table

na(n)
12
24
38
414
522
632
742
854
968
1082
1198
12116
13134
14154
15176
16200
17224
18250
19278
20306
21336
22368
23400
24434
25470
26508
27546
28586
29628
30670
31714
32760
33808
34856
35906
36958
371010
381064
391120
401178
411236
421296
431358
441420
451484
461550
471616
481684
491754
501826
511898
521972

[2,4,8,14,22,32,42,54,68,82,98,116,134,154,176,
 200,224,250,278,306,336,368,400,434,470,508,546,
 586,628,670,714,760,808,856,906,958,1010,1064,
 1120,1178,1236,1296,1358,1420,1484,1550,1616,1684,
 1754,1826,1898,1972]