a(n)^2 is the square obtained in A075404 (or 0 if no such square exists).

Terms

a(0) =70a(1) =0a(2) =5a(3) =0a(4) =0a(5) =0a(6) =92a(7) =0a(8) =106a(9) =0a(10) =2001863a(11) =0a(12) =652a(13) =0a(14) =679a(15) =0a(16) =138a(17) =77a(18) =0a(19) =29a(20) =724a(21) =413a(22) =0a(23) =0a(24) =182a(25) =0a(26) =253a(27) =385a(28) =0a(29) =1612