A178265 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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