Number of nX2 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.
A240625
Number of nX2 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.
Terms
- a(0) =2a(1) =10a(2) =109a(3) =1332a(4) =16624a(5) =208015a(6) =2604059a(7) =32601488a(8) =408158709a(9) =5110007540a(10) =63975568178a(11) =800952543871
External references
- oeis: A240625