Permutational numbers A134640 which are squares.

Terms

a(0) =0a(1) =1a(2) =225a(3) =2500a(4) =7225a(5) =38025a(6) =106929a(7) =314721a(8) =622521a(9) =751689a(10) =1750329a(11) =3111696a(12) =6002500a(13) =7568001a(14) =8168164a(15) =8282884a(16) =10323369a(17) =11682724a(18) =12517444a(19) =23367556a(20) =23483716a(21) =25623844a(22) =28536964a(23) =33292900a(24) =39513796a(25) =61058596a(26) =73513476a(27) =74545956a(28) =94517284a(29) =105144516