Number of (n+1) X (2+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order.
A231338
Number of (n+1) X (2+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with values 0..3 introduced in row major order.
Terms
- a(0) =4a(1) =9a(2) =22a(3) =59a(4) =159a(5) =439a(6) =1236a(7) =3527a(8) =10184a(9) =29679a(10) =87109a(11) =257077a(12) =761860a(13) =2264909a(14) =6749138a(15) =20146867a(16) =60218835a(17) =180167387a(18) =539423380a(19) =1615890811a(20) =4842424660a(21) =14515699655a(22) =43521570985a(23) =130508409225a(24) =391401045892
External references
- oeis: A231338