Number of (n+2)X(n+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum.
A258604
Number of (n+2)X(n+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum.
Terms
- a(0) =7500a(1) =567009a(2) =8093970a(3) =26101881a(4) =49848864a(5) =125328025a(6) =298341960a(7) =718508025a(8) =1487084440a(9) =3114086416a(10) =5819271930a(11) =11046430404a(12) =19155054072a(13) =33797513281a(14) =55343787840a(15) =92261025025a(16) =144373839480a(17) =229977793600a(18) =346828695130
External references
- oeis: A258604