Some nontrivial permutation of digits is a square.

Terms

a(0) =10a(1) =18a(2) =40a(3) =46a(4) =52a(5) =61a(6) =63a(7) =90a(8) =94a(9) =100a(10) =106a(11) =108a(12) =112a(13) =121a(14) =136a(15) =144a(16) =148a(17) =160a(18) =163a(19) =169a(20) =180a(21) =184a(22) =196a(23) =205a(24) =211a(25) =225a(26) =234a(27) =243a(28) =250a(29) =252