Numbers k such that (7*10^(2k+1) - 18*10^k - 7)/9 is prime.
A183180
Numbers k such that (7*10^(2k+1) - 18*10^k - 7)/9 is prime.
Terms
- a(0) =0a(1) =1a(2) =7a(3) =13a(4) =58a(5) =129a(6) =253a(7) =1657a(8) =2244a(9) =2437a(10) =7924a(11) =9903a(12) =11899a(13) =18157a(14) =18957a(15) =23665a(16) =105609
External references
- oeis: A183180