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A203870 as a simple table

na(n)
1205
21648
31648
410077
521635
610077
755848
8210190
9210190
1055848
11280509
121605552
132935262
141605552
15280509
161322098
1710500903
1831521422
1931521422
2010500903
211322098
225914273
2359962757
24269967062
25443416660
26269967062

[205,1648,1648,10077,21635,10077,55848,210190,
 210190,55848,280509,1605552,2935262,1605552,
 280509,1322098,10500903,31521422,31521422,
 10500903,1322098,5914273,59962757,269967062,
 443416660,269967062]