Number of nX4 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal.
A232061
Number of nX4 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal.
Terms
- a(0) =6a(1) =30a(2) =130a(3) =534a(4) =2230a(5) =9310a(6) =38870a(7) =162278a(8) =677510a(9) =2828606a(10) =11809446a(11) =49304494a(12) =205846518a(13) =859410282a(14) =3588042398a(15) =14980095674a(16) =62541977366a(17) =261113080850
External references
- oeis: A232061