A226343 - OEIS

%I #6 Mar 23 2024 17:30:34

%S 5,67,193,480,972,1736,2962,4733,7063,10319,14629,19869,26785,35285,

%T 45069,57543,72439,89195,109721,133257,159325,190665,226371,264885,

%U 309905,360889,415399,478479,548675,622131,707461,800841,898901

%N Number of nondecreasing -n..n vectors of length 4 whose dot product with some other -n..n vector equals 4.

%C Row 4 of A226340.

%e Some solutions for n=3:

%e   -3  -3  -1  -1  -3  -3  -3  -2  -3  -3   2  -3  -2  -3  -1  -2

%e   -3  -1  -1   2  -3  -1  -3  -2  -2  -2   2  -1  -1  -3   0   1

%e   -2   0   0   3  -3   2   2  -1   2  -1   2   3   1  -2   3   3

%e   -1   1   0   3   2   3   2   1   3   0   2   3   1   0   3   3

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 04 2013