Least integer having a larger digital sum than the previous term and such that 10^(n-1) + a(n) is a prime.
A199190
Least integer having a larger digital sum than the previous term and such that 10^(n-1) + a(n) is a prime.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =9a(4) =37a(5) =49a(6) =99a(7) =379a(8) =399a(9) =787a(10) =799a(11) =1989a(12) =1999a(13) =3999a(14) =6997a(15) =17899a(16) =18999a(17) =38989a(18) =67999a(19) =79899a(20) =79999a(21) =389899a(22) =499989a(23) =798979a(24) =897999a(25) =989899a(26) =2999997a(27) =2899999a(28) =4998999
External references
- oeis: A199190