a(n) is the largest prime p congruent to 1 mod n such that the multiplicative subgroup H of (Z/pZ)* of index n contains no nontrivial mod-p arithmetic progression of length 3.

A298565

a(n) is the largest prime p congruent to 1 mod n such that the multiplicative subgroup H of (Z/pZ)* of index n contains no nontrivial mod-p arithmetic progression of length 3.

Terms

    a(0) =7a(1) =19a(2) =37a(3) =31a(4) =127a(5) =197a(6) =97a(7) =181a(8) =191a(9) =463a(10) =421a(11) =937a(12) =337a(13) =1321a(14) =881a(15) =2347a(16) =3889a(17) =2699a(18) =1861a(19) =1009a(20) =2861a(21) =1979a(22) =3793a(23) =1951a(24) =2861a(25) =3889a(26) =1933a(27) =1973a(28) =4831a(29) =1861

External references