a(n) is the first prime p such that (p+q)/(2*n) is the square of a prime, where q is the next prime after p.

A357373

a(n) is the first prime p such that (p+q)/(2*n) is the square of a prime, where q is the next prime after p.

Terms

    a(0) =3a(1) =17a(2) =11a(3) =47521a(4) =43a(5) =149a(6) =26041a(7) =71a(8) =79a(9) =3607a(10) =97a(11) =107a(12) =6871a(13) =53a(14) =59a(15) =61a(16) =31397a(17) =71a(18) =73a(19) =179a(20) =2539a(21) =197a(22) =2777a(23) =599a(24) =223a(25) =647a(26) =107a(27) =61843a(28) =1520777a(29) =113

External references