Numbers n such that 2n-1, 4n-1, 6n-1, 8n-1, 10n-1, 12n-1, 14n-1 and 16n-1 are primes.
A124491
Numbers n such that 2n-1, 4n-1, 6n-1, 8n-1, 10n-1, 12n-1, 14n-1 and 16n-1 are primes.
Terms
- a(0) =1447110a(1) =30020760a(2) =32261985a(3) =121012185a(4) =203937090a(5) =546020475a(6) =546037695a(7) =837344865a(8) =1140530160a(9) =2517567255a(10) =2664703335a(11) =2841691440a(12) =2896212165a(13) =3000108405a(14) =3190108740a(15) =5204790360a(16) =5744351970a(17) =6872932605a(18) =7090912185
External references
- oeis: A124491