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A247245 as a simple table

na(n)
15
28
312
48
55
612
742
88
918
1030
11198
1212
1352
1442
1530
16112
1768
1818
19152
2060
2142
22198
23138
2424
25100
2652
27162
2884
29696
3030
31186
32128
33198
3468
35210
3636
37222
38152
3978
40120
41410
4242
43172
44308
4590
46138
47564
48144
49882
50100
51204
5252
531272
54162
55330
56112
57456
58696
59472
6060
611220
62186
63630
64128
65390

[5,8,12,8,5,12,42,8,18,30,198,12,52,42,30,112,68,
 18,152,60,42,198,138,24,100,52,162,84,696,30,186,
 128,198,68,210,36,222,152,78,120,410,42,172,308,
 90,138,564,144,882,100,204,52,1272,162,330,112,
 456,696,472,60,1220,186,630,128,390]