Number of (2+1) X (n+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits.
A262421
Number of (2+1) X (n+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits.
Terms
- a(0) =5a(1) =4a(2) =45a(3) =114a(4) =709a(5) =2892a(6) =15293a(7) =72370a(8) =367125a(9) =1808844a(10) =9078925a(11) =45214674a(12) =226307429a(13) =1130307532a(14) =5653140573a(15) =28257215730a(16) =141297157045a(17) =706426855884
External references
- oeis: A262421