Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock diagonal maximum plus antidiagonal minimum unequal to its neighbors horizontally, vertically and ne+sw antidiagonally.
A253403
Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock diagonal maximum plus antidiagonal minimum unequal to its neighbors horizontally, vertically and ne+sw antidiagonally.
Terms
- a(0) =17560a(1) =37828a(2) =108950a(3) =403698a(4) =1739014a(5) =7437150a(6) =27085902a(7) =115826070a(8) =489226254a(9) =1807771102a(10) =7774449228a(11) =32691341010a(12) =120990997286a(13) =520891540644
External references
- oeis: A253403