Number of length n+2 0..6 arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
A250318
Number of length n+2 0..6 arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
Terms
- a(0) =25a(1) =321a(2) =745a(3) =7969a(4) =57305a(5) =558541a(6) =5237161a(7) =50020061a(8) =461868677a(9) =4110975765
External references
- oeis: A250318