Squares such that in n and sqrt(n) the parity of digits alternates.

Terms

a(0) =0a(1) =1a(2) =4a(3) =9a(4) =16a(5) =25a(6) =36a(7) =49a(8) =81a(9) =256a(10) =529a(11) =729a(12) =1296a(13) =4761a(14) =5476a(15) =6561a(16) =9216a(17) =16129a(18) =32761a(19) =34969a(20) =87616a(21) =763876a(22) =5414929a(23) =5612161a(24) =7414729a(25) =7436529a(26) =7634169a(27) =14561856a(28) =21058921a(29) =34503876