Least prime beginning a string, of length at least n, of consecutive primes which alternate between types 4*k+1 and 4*k+3 or 4*k+3 and 4*k+1.
A289118
Least prime beginning a string, of length at least n, of consecutive primes which alternate between types 4*k+1 and 4*k+3 or 4*k+3 and 4*k+1.
Terms
- a(0) =3a(1) =3a(2) =3a(3) =23a(4) =47a(5) =131a(6) =131a(7) =233a(8) =233a(9) =521a(10) =521a(11) =521a(12) =521a(13) =521a(14) =521a(15) =51749a(16) =505049a(17) =1391087a(18) =2264839a(19) =2556713a(20) =2569529a(21) =2569529a(22) =6160043a(23) =6160043a(24) =6160043a(25) =43679609a(26) =43679609a(27) =198572029a(28) =701575297a(29) =5552898499
External references
- oeis: A289118