Maximum value of (1/2)*Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} Sum_{l=1..n} gcd(b(i,j),b(k,l)) * ((i-k)^2+(j-l)^2) for an n X n matrix b filled with the integers 1 to n^2.
A261177
Maximum value of (1/2)*Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} Sum_{l=1..n} gcd(b(i,j),b(k,l)) * ((i-k)^2+(j-l)^2) for an n X n matrix b filled with the integers 1 to n^2.
Terms
- a(0) =0a(1) =10a(2) =180a(3) =1392a(4) =6149a(5) =21350a(6) =57192a(7) =137617a(8) =298864a(9) =593378a(10) =1101739a(11) =1936342a(12) =3216080
External references
- oeis: A261177