Number of n X 2 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
A207436
Number of n X 2 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =4a(1) =16a(2) =36a(3) =81a(4) =196a(5) =484a(6) =1225a(7) =3136a(8) =8100a(9) =21025a(10) =54756a(11) =142884a(12) =373321a(13) =976144a(14) =2553604a(15) =6682225a(16) =17489124a(17) =45778756a(18) =119836809a(19) =313714944a(20) =821280964a(21) =2150084161a(22) =5628900676a(23) =14736503236a(24) =38580423561a(25) =101004467344a(26) =264432492900
External references
- oeis: A207436