Half the number of n X 4 binary arrays with a path of adjacent 1's and a path of adjacent 0's from top row to bottom row.
A069404
Half the number of n X 4 binary arrays with a path of adjacent 1's and a path of adjacent 0's from top row to bottom row.
Terms
- a(0) =7a(1) =55a(2) =377a(3) =2427a(4) =15253a(5) =94847a(6) =587031a(7) =3625675a(8) =22372413a(9) =137993145a(10) =850987067a(11) =5247512077a(12) =32357022035a(13) =199515609775
External references
- oeis: A069404