Number of nondecreasing -n..n vectors of length 3 whose dot product with some nondecreasing -n..n vector equals 3.

A226411

Number of nondecreasing -n..n vectors of length 3 whose dot product with some nondecreasing -n..n vector equals 3.

Terms

    a(0) =4a(1) =23a(2) =74a(3) =130a(4) =240a(5) =358a(6) =566a(7) =766a(8) =1112a(9) =1408a(10) =1916a(11) =2362a(12) =3066a(13) =3656a(14) =4564a(15) =5348a(16) =6544a(17) =7522a(18) =9014a(19) =10184a(20) =11966a(21) =13430a(22) =15602a(23) =17366a(24) =19820a(25) =21858a(26) =24814a(27) =27150a(28) =30580a(29) =33202

External references