Number of (n+1)X(5+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
A251052
Number of (n+1)X(5+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
Terms
- a(0) =5449a(1) =25847a(2) =53306a(3) =123396a(4) =248803a(5) =521785a(6) =1045337a(7) =2159272a(8) =4456235a(9) =9472092a(10) =20420073a(11) =44991377a(12) =100353084a(13) =226542343a(14) =514848340a(15) =1176370457a(16) =2695715545a(17) =6190362467a(18) =14231110836a(19) =32740615341a(20) =75353257829a(21) =173470613490
External references
- oeis: A251052