Number of nondecreasing -n..n vectors of length 7 whose dot product with some nondecreasing -n..n vector equals 7.
A226415
Number of nondecreasing -n..n vectors of length 7 whose dot product with some nondecreasing -n..n vector equals 7.
Terms
- a(0) =8a(1) =281a(2) =1631a(3) =6041a(4) =18765a(5) =47291a(6) =113273a(7) =235677a(8) =465959a(9) =853593a(10) =1515861
External references
- oeis: A226415