Least prime p such that pi(p*n)^2 = pi(q*n)^2 + pi(r*n)^2 for some primes q and r, where pi(x) denotes the number of primes not exceeding x.

A257364

Least prime p such that pi(p*n)^2 = pi(q*n)^2 + pi(r*n)^2 for some primes q and r, where pi(x) denotes the number of primes not exceeding x.

Terms

    a(0) =11a(1) =59a(2) =47a(3) =211a(4) =23a(5) =233a(6) =181a(7) =257a(8) =109a(9) =109a(10) =13a(11) =311a(12) =929a(13) =47a(14) =389a(15) =757a(16) =1747a(17) =13a(18) =67a(19) =2389a(20) =1087a(21) =569a(22) =311a(23) =853a(24) =103a(25) =5569a(26) =1399a(27) =3203a(28) =10891a(29) =3673

External references