Number of length-n 0..7 arrays with no adjacent pair x,x+1 followed at any distance by x+1,x.
A268456
Number of length-n 0..7 arrays with no adjacent pair x,x+1 followed at any distance by x+1,x.
Terms
- a(0) =8a(1) =64a(2) =505a(3) =3977a(4) =31276a(5) =245626a(6) =1926444a(7) =15089356a(8) =118040270a(9) =922247248a(10) =7196716310a(11) =56092274904a(12) =436681564144
External references
- oeis: A268456