Squares written in base 7.

Terms

a(0) =1a(1) =4a(2) =12a(3) =22a(4) =34a(5) =51a(6) =100a(7) =121a(8) =144a(9) =202a(10) =232a(11) =264a(12) =331a(13) =400a(14) =441a(15) =514a(16) =562a(17) =642a(18) =1024a(19) =1111a(20) =1200a(21) =1261a(22) =1354a(23) =1452a(24) =1552a(25) =1654a(26) =2061a(27) =2200a(28) =2311a(29) =2424