Number of nX4 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302261
Number of nX4 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =105a(2) =772a(3) =5922a(4) =45717a(5) =353229a(6) =2727755a(7) =21069318a(8) =162753849a(9) =1257225302a(10) =9711792270a(11) =75021745843a(12) =579529894725
External references
- oeis: A302261