Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A301350
Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =2a(1) =30a(2) =277a(3) =2349a(4) =19561a(5) =165010a(6) =1392131a(7) =11741731a(8) =99032014a(9) =835272398a(10) =7045026710a(11) =59420627072a(12) =501178143148
External references
- oeis: A301350