Number of nondecreasing -n..n vectors of length 6 whose dot product with some nonincreasing -n..n vector equals 6.
A226403
Number of nondecreasing -n..n vectors of length 6 whose dot product with some nonincreasing -n..n vector equals 6.
Terms
- a(0) =2a(1) =128a(2) =756a(3) =2498a(4) =6900a(5) =17812a(6) =37358a(7) =72000a(8) =130722a(9) =224132a(10) =367754a(11) =580236a(12) =887652a(13) =1319408a(14) =1912914a(15) =2712244
External references
- oeis: A226403