a(n) is the smallest k such that prime(k+i) (mod 6) takes successively the values 5, 5, ... for i = 0, 1, ..., n-1.

A247967

a(n) is the smallest k such that prime(k+i) (mod 6) takes successively the values 5, 5, ... for i = 0, 1, ..., n-1.

Terms

    a(0) =3a(1) =9a(2) =15a(3) =54a(4) =290a(5) =987a(6) =4530a(7) =21481a(8) =58554a(9) =60967a(10) =136456a(11) =136456a(12) =673393a(13) =1254203a(14) =1254203a(15) =7709873a(16) =21357253a(17) =21357253a(18) =25813464a(19) =25813464a(20) =39500857a(21) =39500857a(22) =947438659a(23) =947438659a(24) =947438659a(25) =5703167678a(26) =5703167678a(27) =16976360924a(28) =68745739764a(29) =117327812949

External references