Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
A297726
Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
Terms
- a(0) =1a(1) =2735a(2) =110551a(3) =2139403a(4) =91994155a(5) =4238895126a(6) =154327332017
External references
- oeis: A297726