Number of strings of n+2 numbers x(i) in -7..7 with the sum of x(i) equal to zero and the sums of x(i)*x(i+1) and x(i)*x(i+2) equal to each other.
A184059
Number of strings of n+2 numbers x(i) in -7..7 with the sum of x(i) equal to zero and the sums of x(i)*x(i+1) and x(i)*x(i+2) equal to each other.
Terms
- a(0) =1a(1) =33a(2) =245a(3) =2145a(4) =35451a(5) =496519
External references
- oeis: A184059