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A028469 as a simple table

na(n)
01
121
2781
331529
41292697
553175517
62188978117
790124167441
83710708201969
9152783289861989
106290652543875133
11259009513044645817
1210664383939345916681
13439092316687230373293
1418079062471131097321077

[1,21,781,31529,1292697,53175517,2188978117,
 90124167441,3710708201969,152783289861989,
 6290652543875133,259009513044645817,
 10664383939345916681,439092316687230373293,
 18079062471131097321077]