Number of -7..7 arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences.
A200453
Number of -7..7 arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences.
Terms
- a(0) =142a(1) =1832a(2) =22276a(3) =278906a(4) =3513884a(5) =44716536a(6) =572857272a(7) =7380022092a(8) =95496980144
External references
- oeis: A200453