Number of nX4 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.
A201535
Number of nX4 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =6a(1) =69a(2) =633a(3) =7799a(4) =91425a(5) =983981a(6) =9526987a(7) =82847704a(8) =652848538a(9) =4712696751a(10) =31480011434a(11) =196280028176
External references
- oeis: A201535