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A136513 as a simple table

na(n)
10
20
32
42
56
68
712
816
926
1030
1138
1244
1356
1460
1574
1682
1796
18108
19128
20138
21154
22166
23188
24196
25220
26238
27262
28278
29304
30324
31344
32366
33398
34416
35452
36468
37506
38526
39562
40588
41616
42644
43686
44714
45754
46780
47824
48848
49894
50930
51976
521008
531056
541090
551134
561170

[0,0,2,2,6,8,12,16,26,30,38,44,56,60,74,82,96,108,
 128,138,154,166,188,196,220,238,262,278,304,324,
 344,366,398,416,452,468,506,526,562,588,616,644,
 686,714,754,780,824,848,894,930,976,1008,1056,
 1090,1134,1170]