Minimum 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.

A261176

Minimum 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) =9a(2) =126a(3) =802a(4) =3158a(5) =10040a(6) =25464a(7) =58837a(8) =123422a(9) =238203a(10) =429467a(11) =733923a(12) =1200319a(13) =1912928a(14) =2945116a(15) =4369570a(16) =6338678a(17) =9053512a(18) =12622814a(19) =17359779a(20) =23503546a(21) =31347788a(22) =41161317

External references