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A146038 as a simple table

na(n)
11
21
31
429
5249
64021
799935
84398251
9362789159
1047338031953
1110727733486159
124071858369077715

[1,1,1,29,249,4021,99935,4398251,362789159,
 47338031953,10727733486159,4071858369077715]