Number of -7..7 arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero.
A199942
Number of -7..7 arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero.
Terms
- a(0) =14a(1) =182a(2) =2294a(3) =28490a(4) =351148a(5) =4310382a(6) =52799912a(7) =646091920a(8) =7901341926
External references
- oeis: A199942