Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1, 32*k+1, 64*k+1 and 128*k+1 are primes.
A124415
Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1, 32*k+1, 64*k+1 and 128*k+1 are primes.
Terms
- a(0) =8325a(1) =82950a(2) =884220a(3) =1120470a(4) =3441690a(5) =5627895a(6) =5765505a(7) =7664745a(8) =7757430a(9) =8555040a(10) =10739505a(11) =11891625a(12) =15514860a(13) =15623475a(14) =18268455a(15) =22631970a(16) =24833775a(17) =27373410a(18) =29342895a(19) =31286970a(20) =31577205a(21) =50077455a(22) =51541035a(23) =58646520
External references
- oeis: A124415