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A107390 as a simple table

na(n)
14
26
318
436
576
6147
7285
8532
9984
101795
113237
125793
1310293
1418168
1531887
1655709
1796926
18167972
19290136
20499615
21857947
221469576
232511369
244282663
257289002
2612383250
2721002336
2835564859
2960136917
30101547211
31171253466
32288461204

[4,6,18,36,76,147,285,532,984,1795,3237,5793,
 10293,18168,31887,55709,96926,167972,290136,
 499615,857947,1469576,2511369,4282663,7289002,
 12383250,21002336,35564859,60136917,101547211,
 171253466,288461204]