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A055366 as a simple table

na(n)
71
87
931
10109
11321
12833
131951
144212
158498
1616205
1729449
1851349
1986363
20140731
21222986
22344607
23520758
24771208
251121360
261603501
272258188
283135900
294298854
305823139
317801042
3210343750
3313584274
3417680810
3522820358
3629222841

[1,7,31,109,321,833,1951,4212,8498,16205,29449,
 51349,86363,140731,222986,344607,520758,771208,
 1121360,1603501,2258188,3135900,4298854,5823139,
 7801042,10343750,13584274,17680810,22820358,
 29222841]