Number of n X 3 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300961
Number of n X 3 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =5a(2) =16a(3) =44a(4) =159a(5) =580a(6) =2145a(7) =8034a(8) =30017a(9) =113054a(10) =426489a(11) =1609240a(12) =6078735a(13) =22967236a(14) =86790502a(15) =328025891a(16) =1239827639a(17) =4686314366a(18) =17713839936a(19) =66957270615a(20) =253096517486a(21) =956701365708
External references
- oeis: A300961