Number of (n+1) X (2+1) 0..3 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
A251049
Number of (n+1) X (2+1) 0..3 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the absolute difference of its antidiagonal elements.
Terms
- a(0) =290a(1) =1528a(2) =4334a(3) =11280a(4) =25847a(5) =56676a(6) =118925a(7) =247753a(8) =515324a(9) =1087674a(10) =2331944a(11) =5093511a(12) =11294058a(13) =25360220a(14) =57445566a(15) =130937588a(16) =299629648a(17) =687412847a(18) =1579482633a(19) =3632619857a(20) =8359090437a(21) =19241386917a(22) =44298667688a(23) =101997419499
External references
- oeis: A251049