Number of nX5 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero.
A301666
Number of nX5 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =61a(2) =407a(3) =2793a(4) =21224a(5) =146841a(6) =1073621a(7) =7703565a(8) =55506215a(9) =399555430a(10) =2875870497a(11) =20706418377a(12) =149059329261
External references
- oeis: A301666