OFFSET
0,2
COMMENTS
For a guide to related sequences, see A211422.
MATHEMATICA
t[n_] := t[n] = Flatten[Table[(n + w)^2 - x - y, {w, -n, n}, {x, -n, n}, {y, -n, n}]]
c[n_] := Count[t[n], 0]
t = Table[c[n], {n, 0, 70}] (* A211483 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Apr 12 2012
STATUS
approved