login

A090153 as a simple table

na(n)
15
253
359
4577
5599
65333
759999
8511111
9599999
1059999999
11577777777
1259999999999
135111111111111
1453333333333333
1559999999999999
16577777777777777
175111111111111111
18577777777777777777

[5,53,59,577,599,5333,59999,511111,599999,
 59999999,577777777,59999999999,5111111111111,
 53333333333333,59999999999999,577777777777777,
 5111111111111111,577777777777777777]