Number of nX1 0..n-1 arrays with upper left zero and lower right n-1 and each element differing from its horizontal and vertical neighbors by a power of three.
A265212
Number of nX1 0..n-1 arrays with upper left zero and lower right n-1 and each element differing from its horizontal and vertical neighbors by a power of three.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =12a(5) =32a(6) =109a(7) =366a(8) =1189a(9) =9855a(10) =58994a(11) =296022a(12) =1959725a(13) =11368311a(14) =60437981a(15) =345527448a(16) =1904249259a(17) =10390269667a(18) =64901329419a(19) =387065403450
External references
- oeis: A265212