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A307711 as a simple table

na(n)
23
331
497
5331
61009
73067
811513
927403
1064621
11185617
12480853
131333951
143524431
159558361
1626080333
1770411483
18189961939

[3,31,97,331,1009,3067,11513,27403,64621,185617,
 480853,1333951,3524431,9558361,26080333,70411483,
 189961939]