Positive integers k such that A270710(k) (= (k+1)*(3*k-1)) have only 1 or 2 different digits in base 10.
A322570
Positive integers k such that A270710(k) (= (k+1)*(3*k-1)) have only 1 or 2 different digits in base 10.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =12a(7) =16a(8) =17a(9) =33a(10) =34a(11) =48a(12) =54a(13) =285a(14) =333a(15) =334a(16) =365a(17) =385a(18) =430a(19) =471a(20) =516a(21) =816a(22) =1049a(23) =3333a(24) =3334a(25) =33333a(26) =33334a(27) =333333a(28) =333334a(29) =483048
External references
- oeis: A322570