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A147023 as a simple table

na(n)
11
21
31
41
51
61
71
81
93
105
1111
1217
1329
1449
15194
16513
171943
185111
1918756
2056573
21304185
221238797
237708601
2434648607
25235404133
261230092163
2710469480011
2868020491883

[1,1,1,1,1,1,1,1,3,5,11,17,29,49,194,513,1943,
 5111,18756,56573,304185,1238797,7708601,34648607,
 235404133,1230092163,10469480011,68020491883]