Number of 0..n arrays x(0..8) of 9 elements without any two consecutive increases or two consecutive decreases.
A200844
Number of 0..n arrays x(0..8) of 9 elements without any two consecutive increases or two consecutive decreases.
Terms
- a(0) =512a(1) =11235a(2) =99700a(3) =552247a(4) =2276028a(5) =7642875a(6) =22063924a(7) =56687801a(8) =132734964a(9) =288116455a(10) =587136848a(11) =1134248583a(12) =2093008152a(13) =3711583751a(14) =6356379032a(15) =10555568481a(16) =17054586712a(17) =26885876603a(18) =41455479708a(19) =62649346759a(20) =92962556324
External references
- oeis: A200844