Number of 2Xn 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.
A231840
Number of 2Xn 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.
Terms
- a(0) =16a(1) =50a(2) =188a(3) =760a(4) =3309a(5) =14666a(6) =64607a(7) =283479a(8) =1243280a(9) =5452114a(10) =23905237a(11) =104828007a(12) =459770373a(13) =2016638186a(14) =8845269109a(15) =38796696140a(16) =170170211095a(17) =746407664707
External references
- oeis: A231840