Number of length 7+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
A250326
Number of length 7+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
Terms
- a(0) =212a(1) =5849a(2) =61092a(3) =363457a(4) =1559080a(5) =5237161a(6) =14866258a(7) =37065983a(8) =83449226a(9) =172987415
External references
- oeis: A250326