Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + k^11 + k^13 + k^15 + k^17 + k^19 + k^21 + k^23 + k^25 + k^27 + k^29 + k^31 + k^33 + k^35 + k^37 + k^39 + k^41 + k^43 + k^45 + k^47 + k^49 + k^51 is prime.
A124206
Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + k^11 + k^13 + k^15 + k^17 + k^19 + k^21 + k^23 + k^25 + k^27 + k^29 + k^31 + k^33 + k^35 + k^37 + k^39 + k^41 + k^43 + k^45 + k^47 + k^49 + k^51 is prime.
Terms
- a(0) =12a(1) =140a(2) =212a(3) =315a(4) =455a(5) =512a(6) =560a(7) =660a(8) =687a(9) =807a(10) =947a(11) =1005a(12) =1007a(13) =1097a(14) =1128a(15) =1152a(16) =1182a(17) =1301a(18) =1427a(19) =1442a(20) =1491a(21) =1571a(22) =1755a(23) =1787a(24) =1860a(25) =2258a(26) =2346a(27) =2400a(28) =2616a(29) =2712
External references
- oeis: A124206