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A346646 as a simple table

na(n)
01
12
27
338
4257
51935
615505
7129519
81115061
99823160
1088121887
11802227794
127392428009
1368819554003
14646276497617
156114880542117
1658237420303109
17557850829527246
185370956411708779
1951947475492561014
20504492516832543885
214917564488572565160

[1,2,7,38,257,1935,15505,129519,1115061,9823160,
 88121887,802227794,7392428009,68819554003,
 646276497617,6114880542117,58237420303109,
 557850829527246,5370956411708779,
 51947475492561014,504492516832543885,
 4917564488572565160]