Numbers that are 1-persistent but not 2-persistent.

Terms

a(0) =1023456798a(1) =1023456897a(2) =1023456978a(3) =1023456987a(4) =1023457698a(5) =1023457896a(6) =1023457968a(7) =1023457986a(8) =1023458697a(9) =1023458796a(10) =1023458967a(11) =1023458976a(12) =1023459678a(13) =1023459687a(14) =1023459768a(15) =1023459786a(16) =1023459867a(17) =1023459876