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A083068 as a simple table

na(n)
01
17
255
3439
43511
528087
6224695
71797559
814380471
9115043767
10920350135
117362801079
1258902408631
13471219269047
143769754152375
1530158033218999
16241264265751991
171930114126015927
1815440913008127415
19123527304065019319
20988218432520154551
217905747460161236407

[1,7,55,439,3511,28087,224695,1797559,14380471,
 115043767,920350135,7362801079,58902408631,
 471219269047,3769754152375,30158033218999,
 241264265751991,1930114126015927,
 15440913008127415,123527304065019319,
 988218432520154551,7905747460161236407]