Left truncatable 3-almost primes, in which repeatedly deleting the leftmost digit gives a 3-almost prime at every step until a single-digit 3-almost prime remains.
A085248
Left truncatable 3-almost primes, in which repeatedly deleting the leftmost digit gives a 3-almost prime at every step until a single-digit 3-almost prime remains.
Terms
- a(0) =8a(1) =18a(2) =28a(3) =68a(4) =78a(5) =98a(6) =268a(7) =318a(8) =418a(9) =428a(10) =498a(11) =518a(12) =578a(13) =598a(14) =618a(15) =628a(16) =668a(17) =678a(18) =978a(19) =1268a(20) =1498a(21) =1578a(22) =1598a(23) =1978a(24) =2318a(25) =2428a(26) =2598a(27) =2678a(28) =3428a(29) =3598
External references
- oeis: A085248