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A201307 as a simple table

na(n)
15
231
3347
4733
56863
615629
719687
891129
9250051
10328513
11493043
12614129
13658507
14970303
151092731
161295033
171520879
181601617
192146693
202352641
213048629
224826813
235359379
246128491
257414879
268869747
2712977879
2821253937
2921717643

[5,31,347,733,6863,15629,19687,91129,250051,
 328513,493043,614129,658507,970303,1092731,
 1295033,1520879,1601617,2146693,2352641,3048629,
 4826813,5359379,6128491,7414879,8869747,12977879,
 21253937,21717643]