Number of n X 2 0..3 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..3 introduced in row major order.
A240637
Number of n X 2 0..3 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..3 introduced in row major order.
Terms
- a(0) =1a(1) =5a(2) =27a(3) =193a(4) =1391a(5) =10072a(6) =72941a(7) =528283a(8) =3826157a(9) =27711478a(10) =200704271a(11) =1453628917a(12) =10528111931a(13) =76251331828a(14) =552260998337
External references
- oeis: A240637