Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
A251020
Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
Terms
- a(0) =110a(1) =2546a(2) =20608a(3) =119632a(4) =516684a(5) =2160510a(6) =7948184a(7) =29146692a(8) =100696896a(9) =345190686a(10) =1144782282a(11) =3748752570a(12) =12009496342a(13) =37949629638
External references
- oeis: A251020