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A337790 as a simple table

na(n)
03
157
2306
3837
41335
52073
63033
74395
86147
98469
1011253
1114907
1219263
1324819
1431197
1538823
1647619

[3,57,306,837,1335,2073,3033,4395,6147,8469,11253,
 14907,19263,24819,31197,38823,47619]