Primes of the form (m^(p^2) - 1)/(m^p - 1) with prime p and integer m >= 2.

Terms

a(0) =5a(1) =17a(2) =37a(3) =73a(4) =101a(5) =197a(6) =257a(7) =401a(8) =577a(9) =677a(10) =757a(11) =1297a(12) =1601a(13) =2917a(14) =3137a(15) =4357a(16) =5477a(17) =7057a(18) =8101a(19) =8837a(20) =12101a(21) =13457a(22) =14401a(23) =15377a(24) =15877a(25) =16901a(26) =17957a(27) =21317a(28) =22501a(29) =24337