a(n) = permanent M_n where M_n is the n X n matrix m(i,j) = abs(i^2-j^2).
A278858
a(n) = permanent M_n where M_n is the n X n matrix m(i,j) = abs(i^2-j^2).
Terms
- a(0) =1a(1) =0a(2) =9a(3) =240a(4) =36864a(5) =7741440a(6) =3363235524
External references
- oeis: A278858