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A143651 as a simple table

na(n)
12
211
328
452
511
648828127
721
8131
929
10292
11524290
1235
1360
14532
15245
168195
1711
183219905755813179726837609
19274
2035
21138
2278127
2310
241388
251594325
26284
2715
281851
291333
3048
312213
322189
3334
34129140165
358245
3611
3748828127
382190
39390
403483
41304

[2,11,28,52,11,48828127,21,131,29,292,524290,35,
 60,532,245,8195,11,3219905755813179726837609,274,
 35,138,78127,10,1388,1594325,284,15,1851,1333,48,
 2213,2189,34,129140165,8245,11,48828127,2190,390,
 3483,304]