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A028213 as a simple table

na(n)
01
135
2773
313783
4216909
53146703
643129381
7567128471
87227535997
989900761951
101097000610069
1113181200344039
12156403487677165
131836701044549679
1421383695384607237
15247159815109688887

[1,35,773,13783,216909,3146703,43129381,567128471,
 7227535997,89900761951,1097000610069,
 13181200344039,156403487677165,1836701044549679,
 21383695384607237,247159815109688887]