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

A226400

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

Terms

    a(0) =2a(1) =12a(2) =68a(3) =120a(4) =224a(5) =344a(6) =552a(7) =752a(8) =1100a(9) =1398a(10) =1904a(11) =2356a(12) =3062a(13) =3650a(14) =4558a(15) =5348a(16) =6544a(17) =7526a(18) =9010a(19) =10184a(20) =11972a(21) =13438a(22) =15608a(23) =17376a(24) =19826a(25) =21872a(26) =24828a(27) =27166a(28) =30592a(29) =33222

External references