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A015265 as a simple table

na(n)
21
3157
426690
54508570
6761974851
7128773405047
821762709934980
93677897920745140
10621564749363392901
11105044442632566365137
1217752510805031727164870
133000174326048697741925710
14507029461102251552321630151
1585687978926280231101185088427

[1,157,26690,4508570,761974851,128773405047,
 21762709934980,3677897920745140,
 621564749363392901,105044442632566365137,
 17752510805031727164870,3000174326048697741925710,
 507029461102251552321630151,
 85687978926280231101185088427]