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A233093 as a simple table

na(n)
15
265
3941
413721
5200165
62920145
742601181
8621496841
99066845525
10132273701825
111929704454221
1228151924602361
13410700642310085
145991598087037105
1587409767451696061
161275196923253218281

[5,65,941,13721,200165,2920145,42601181,621496841,
 9066845525,132273701825,1929704454221,
 28151924602361,410700642310085,5991598087037105,
 87409767451696061,1275196923253218281]