cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A178268 Number of collinear point triples in an n X n .. X n 4-dimensional cubical grid.

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%I A178268 #6 Jul 22 2025 08:12:22
%S A178268 0,0,272,2960,21680,85584,330032,916832,2402544,5543936,12188000,
%T A178268 23612496,46235520,82329552,142808864,239006304,393144576,612427040,
%U A178268 953341296,1420731120,2107948720,3060955376,4384446800,6098267968
%N A178268 Number of collinear point triples in an n X n .. X n 4-dimensional cubical grid.
%H A178268 R. H. Hardin, <a href="/A178268/b178268.txt">Table of n, a(n) for n=1..38</a>
%Y A178268 Three collinear points in an n X n grid A000938 ; n X n X n grid A157882
%K A178268 nonn
%O A178268 1,3
%A A178268 _R. H. Hardin_, suggested by R. J. Mathar in the Sequence Fans Mailing List, May 24 2010