a(0) = 1; a(n+1) = 10*a(n) + (a(n)-1 mod 9) + 1, or the least number not yet in the sequence in case a(n) is a multiple of 3 or a prime.
A375102
a(0) = 1; a(n+1) = 10*a(n) + (a(n)-1 mod 9) + 1, or the least number not yet in the sequence in case a(n) is a multiple of 3 or a prime.
Terms
- a(0) =1a(1) =11a(2) =2a(3) =3a(4) =4a(5) =44a(6) =448a(7) =4487a(8) =44875a(9) =448751a(10) =4487512a(11) =44875124a(12) =448751248a(13) =4487512487a(14) =44875124875a(15) =448751248751a(20) =5a(21) =6a(22) =7a(23) =8a(24) =88a(25) =887a(26) =9a(27) =10a(28) =101a(29) =12a(30) =13a(31) =14a(32) =145a(33) =1451
External references
- oeis: A375102