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A276591 as a simple table

na(n)
12
25
311
419
543
6151
7311
8439
9823
102551
116007
1212919
1323159
1435447
1592791
16203383
17535159
18731767
191124983
205253751
216302327
2216919159
2332647799
24103426679
25160049783
26285878903
27386542199
281066019447
291468672631
302676632183
315092551287
3216366840439
3332472967799

[2,5,11,19,43,151,311,439,823,2551,6007,12919,
 23159,35447,92791,203383,535159,731767,1124983,
 5253751,6302327,16919159,32647799,103426679,
 160049783,285878903,386542199,1066019447,
 1468672631,2676632183,5092551287,16366840439,
 32472967799]