Numbers k not divisible by 9 such that k divides 10^k - 1 (A014950).
A232769
Numbers k not divisible by 9 such that k divides 10^k - 1 (A014950).
Terms
- a(0) =1a(1) =3a(2) =111a(3) =4107a(4) =151959a(5) =5622483a(6) =22494039a(7) =208031871a(8) =225121209a(9) =832279443a(10) =7697179227a(11) =8329484733a(12) =27486820443a(13) =30794339391a(14) =92366302683a(15) =123199851603a(16) =230915528769a(17) =284795631399a(18) =308190935121
External references
- oeis: A232769