Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and with no two consecutive increases or two consecutive decreases.
A263664
Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and with no two consecutive increases or two consecutive decreases.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =32a(5) =122a(6) =544a(7) =2287a(8) =7688a(9) =25662a(10) =79456a(11) =256482a(12) =809784a(13) =2690604a(14) =8874432a(15) =30009480a(16) =98599568a(17) =332395712a(18) =1084222064a(19) =3637730112a(20) =11844968640a(21) =39726351272a(22) =129526799072a(23) =434837072968
External references
- oeis: A263664