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A066210 as a simple table

na(n)
01
15
2273
347989
417043521
510101010101
68978450801041
711168991475945493
818519084246547628289
939468223580173616639125
10105120401002506265664160401
11342134767379466388778420319285
121336055317331762879448123353666113

[1,5,273,47989,17043521,10101010101,8978450801041,
 11168991475945493,18519084246547628289,
 39468223580173616639125,
 105120401002506265664160401,
 342134767379466388778420319285,
 1336055317331762879448123353666113]