Number of (n+1) X (3+1) 0..1 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
A251123
Number of (n+1) X (3+1) 0..1 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
Terms
- a(0) =40a(1) =69a(2) =108a(3) =173a(4) =272a(5) =430a(6) =680a(7) =1080a(8) =1721a(9) =2752a(10) =4413a(11) =7093a(12) =11421a(13) =18415a(14) =29722a(15) =48007a(16) =77582a(17) =125424a(18) =202822a(19) =328042a(20) =530639a(21) =858434a(22) =1388803a(23) =2246943a(24) =3635427a(25) =5882025a(26) =9517080a(27) =15398705a(28) =24915356a(29) =40313602
External references
- oeis: A251123