A178287 Number of collinear point 4-tuples in an n X n .. X n 7-dimensional cubical grid

0, 0, 0, 131776, 3470549, 37807680, 371453327, 2166664192, 10453333842, 47955097344, 177644368014, 539461479744, 1776632877223, 4936852235840, 12181833395949, 30549903200768, 72297760469620, 155915494771968

Offset

1,4

Links

R. H. Hardin, 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: A208488 A170800 A204760 * A234159 A345395 A161356

Adjacent sequences: A178284 A178285 A178286 * A178288 A178289 A178290

Keyword

nonn

Author

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

Status

approved