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A033691 as a simple table

na(n)
24
38
412
520
624
732
840
952
1060
1172
1284
13100
14112
15128
16144
17164
18180
19200
20220
21244
22264
23288
24312
25340
26364
27392
28420
29452
30480
31512
32544
33580
34612
35648
36684
37724
38760
39800
40840
41884
42924
43968
441012
451060
461104
471152
481200
491252
501300
511352
521404
531460

[4,8,12,20,24,32,40,52,60,72,84,100,112,128,144,
 164,180,200,220,244,264,288,312,340,364,392,420,
 452,480,512,544,580,612,648,684,724,760,800,840,
 884,924,968,1012,1060,1104,1152,1200,1252,1300,
 1352,1404,1460]