a(n) is the smallest starting prime of a sequence of exactly n consecutive primes that are alternately of the form 6*k+1 and 6*k-1 or vice versa.

A382249

a(n) is the smallest starting prime of a sequence of exactly n consecutive primes that are alternately of the form 6*k+1 and 6*k-1 or vice versa.

Terms

    a(0) =23a(1) =19a(2) =17a(3) =13a(4) =11a(5) =7a(6) =5a(7) =97a(8) =89a(9) =877a(10) =863a(11) =859a(12) =857a(13) =853a(14) =839a(15) =829a(16) =827a(17) =823a(18) =821a(19) =811a(20) =809a(21) =3954889a(22) =15186331a(23) =15186323a(24) =15186319a(25) =77011331a(26) =77011303a(27) =77011289a(28) =288413249a(29) =288413233

External references