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A221486 as a simple table

na(n)
10
264
3313
434751
5802711
637622097
71219698562
847497298437
91684060316110
1062602762212310
112271866000217269
1283456368590958988
133046870056535199883
14111585285541376641494
154080105459850623520340
16149308509670479309110705

[0,64,313,34751,802711,37622097,1219698562,
 47497298437,1684060316110,62602762212310,
 2271866000217269,83456368590958988,
 3046870056535199883,111585285541376641494,
 4080105459850623520340,149308509670479309110705]