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A211847 as a simple table

na(n)
11
215
3149
41173
57996
649210
7280751
81510267
97752966
1038313584
11183476493
12855810005
133904023943
1417474944971
1576959615336
16334220597220
171434013918092
186088757186340
1925619291046722
20106954200571650
21443491592171780

[1,15,149,1173,7996,49210,280751,1510267,7752966,
 38313584,183476493,855810005,3904023943,
 17474944971,76959615336,334220597220,
 1434013918092,6088757186340,25619291046722,
 106954200571650,443491592171780]