A178265 Number of collinear point 7-tuples in an n X n X n cubical grid

0, 0, 0, 0, 0, 0, 193, 2072, 12048, 50400, 169950, 490776, 1261308, 2949264, 6403947, 13033792, 25196840, 46452864, 82463460, 141145632, 234641712, 379035984

Offset

1,7

Links

Table of n, a(n) for n=1..22.

Crossrefs

Three collinear points in an n X n grid A000938 ; n X n X n grid A157882

Sequence in context: A204711 A125647 A166540 * A201112 A250156 A197112

Adjacent sequences: A178262 A178263 A178264 * A178266 A178267 A178268

Keyword

nonn

Author

R. H. Hardin, suggested by R. J. Mathar in the Sequence Fans Mailing List, May 24 2010

Status

approved