n/5 analog of Keith numbers.

Terms

a(0) =55a(1) =110a(2) =165a(3) =220a(4) =275a(5) =330a(6) =385a(7) =440a(8) =495a(9) =530a(10) =47270a(11) =119710a(12) =685385a(13) =21526000a(14) =6055017240