Number of nondecreasing -n..n vectors of length 7 whose dot product with some nonincreasing -n..n vector equals 7.
A226404
Number of nondecreasing -n..n vectors of length 7 whose dot product with some nonincreasing -n..n vector equals 7.
Terms
- a(0) =2a(1) =92a(2) =1012a(3) =4280a(4) =15614a(5) =41428a(6) =109062a(7) =228130a(8) =457746a(9) =838870a(10) =1503000
External references
- oeis: A226404