Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
A296639
Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
Terms
- a(0) =7a(1) =86a(2) =671a(3) =5696a(4) =49872a(5) =430522a(6) =3713779a(7) =32095222a(8) =277299810a(9) =2395400876a(10) =20693860360a(11) =178774685507
External references
- oeis: A296639