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A015940 as a simple table

na(n)
11
25
3917
43223
562911
6326329
7395819
833504053
94446226763
1017556128765
11141613728437
125259417592253
13113837290408523

[1,5,917,3223,62911,326329,395819,33504053,
 4446226763,17556128765,141613728437,5259417592253,
 113837290408523]