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A188633 as a simple table

na(n)
136
260
372
484
5100
6108
7120
8132
9140
10144
11156
12168
13180
14196
15200
16204
17216
18220
19228
20240
21252
22260
23264
24276
25280
26288
27300
28308
29312
30324
31336
32340
33348
34360
35364
36372
37380
38392
39396
40400
41408
42420
43432
44440
45444
46456
47460
48468
49476
50480
51484
52492
53500
54504
55516
56520
57528
58532

[36,60,72,84,100,108,120,132,140,144,156,168,180,
 196,200,204,216,220,228,240,252,260,264,276,280,
 288,300,308,312,324,336,340,348,360,364,372,380,
 392,396,400,408,420,432,440,444,456,460,468,476,
 480,484,492,500,504,516,520,528,532]