Numbers k such that k^3 has only odd digits.

Terms

a(0) =1a(1) =11a(2) =15a(3) =33a(4) =39a(5) =71a(6) =91a(7) =173a(8) =175a(9) =179a(10) =211a(11) =259a(12) =335a(13) =3337a(14) =4631a(15) =5597a(16) =7353a(17) =12415a(18) =21353a(19) =22893a(20) =25799a(21) =69491a(22) =110011a(23) =124975a(24) =199831a(25) =227353a(26) =237151a(27) =462815a(28) =492415a(29) =708415