We represent square arrays of single-digit entries by the single number formed by reading them row-by-row, top-to-bottom. Sequence gives list of k X k square grids formed from single-digit numbers having property that reading across each row and each column gives a square number.
A260305
We represent square arrays of single-digit entries by the single number formed by reading them row-by-row, top-to-bottom. Sequence gives list of k X k square grids formed from single-digit numbers having property that reading across each row and each column gives a square number.
Terms
- a(0) =1a(1) =4a(2) =9a(3) =1664a(4) =3664a(5) =6449a(6) =8116a(7) =121256169a(8) =121289196a(9) =144400400a(10) =144484441a(11) =169676961a(12) =361676169a(13) =441400100a(14) =441484144a(15) =529256961a(16) =729256961a(17) =841400100a(18) =841484144a(19) =961676169
External references
- oeis: A260305