a(n+1) is the smallest integer > a(n) such that the concatenation of a(n), [a(n+1)-a(n)] and a(n+1) is a prime number.

A173700

a(n+1) is the smallest integer > a(n) such that the concatenation of a(n), [a(n+1)-a(n)] and a(n+1) is a prime number.

Terms

    a(0) =1a(1) =7a(2) =11a(3) =13a(4) =17a(5) =23a(6) =29a(7) =31a(8) =41a(9) =43a(10) =49a(11) =59a(12) =71a(13) =79a(14) =91a(15) =1019a(16) =1033a(17) =1073a(18) =1087a(19) =1091a(20) =1093a(21) =1127a(22) =1139a(23) =1163a(24) =1169a(25) =1187a(26) =1193a(27) =1219a(28) =1223a(29) =1237

External references