a(n) is the least k such that every n X (n+3) {0,1}-matrix with k ones contains an all-ones 2 X 4 submatrix.
A006624
a(n) is the least k such that every n X (n+3) {0,1}-matrix with k ones contains an all-ones 2 X 4 submatrix.
Terms
- a(0) =9a(1) =14a(2) =20a(3) =27a(4) =33a(5) =41a(6) =49a(7) =57
External references
- oeis: A006624