Number of n X 2 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.
A281338
Number of n X 2 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =2a(1) =8a(2) =25a(3) =85a(4) =286a(5) =969a(6) =3281a(7) =11114a(8) =37649a(9) =127541a(10) =432062a(11) =1463673a(12) =4958409a(13) =16797346a(14) =56903505a(15) =192769085a(16) =653033942a(17) =2212249593a(18) =7494324497a(19) =25388138778a(20) =86006095793a(21) =291358440197a(22) =987020046574
External references
- oeis: A281338