Number of n X 3 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301836
Number of n X 3 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =25a(2) =139a(3) =773a(4) =4299a(5) =23909a(6) =132971a(7) =739525a(8) =4112907a(9) =22874149a(10) =127215787a(11) =707517317a(12) =3934894923a(13) =21884125925a(14) =121709722091a(15) =676895047237
External references
- oeis: A301836