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A305265 as a simple table

na(n)
074
186
2110
3158
4254
5446
6830
71598
83134
96206
1012350
1124638
1249214
1398366
14196670
15393278
16786494
171572926
183145790
196291518
2012582974
2125165886
2250331710
23100663358
24201326654
25402653246
26805306430
271610612798
283221225534
296442451006
3012884901950
3125769803838
3251539607614
33103079215166
34206158430270

[74,86,110,158,254,446,830,1598,3134,6206,12350,
 24638,49214,98366,196670,393278,786494,1572926,
 3145790,6291518,12582974,25165886,50331710,
 100663358,201326654,402653246,805306430,
 1610612798,3221225534,6442451006,12884901950,
 25769803838,51539607614,103079215166,206158430270]