Least negative pseudosquare modulo the first n odd primes.

Terms

a(0) =7a(1) =23a(2) =71a(3) =311a(4) =479a(5) =1559a(6) =5711a(7) =10559a(8) =18191a(9) =31391a(10) =118271a(11) =366791a(12) =366791a(13) =2155919a(14) =2155919a(15) =2155919a(16) =6077111a(17) =6077111a(18) =98538359a(19) =120293879a(20) =131486759a(21) =131486759a(22) =508095719a(23) =2570169839a(24) =2570169839a(25) =2570169839a(26) =2570169839a(27) =2570169839a(28) =2570169839a(29) =328878692999