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A076720 as a simple table

na(n)
12
25
37
415
511
648
715
879
940
10118
1123
121756
1327
14220
15249
161055
1735
185871
1939
208042
21473
22520
2347
24331836
25156
26718
27769
2822008
2959
30810072
3163
3232831
331137
341210
351273
3610077787
3775
381504
391577
402560090
4183
423111792
4387
4485268
4591203
462188
4795

[2,5,7,15,11,48,15,79,40,118,23,1756,27,220,249,
 1055,35,5871,39,8042,473,520,47,331836,156,718,
 769,22008,59,810072,63,32831,1137,1210,1273,
 10077787,75,1504,1577,2560090,83,3111792,87,85268,
 91203,2188,95]