Number of -4..4 arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences.
A200450
Number of -4..4 arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences.
Terms
- a(0) =44a(1) =342a(2) =2334a(3) =16380a(4) =115140a(5) =820650a(6) =5876818a(7) =42324384a(8) =306098316a(9) =2222013090a(10) =16179361028a(11) =118122171194a(12) =864377954818
External references
- oeis: A200450