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.

A201987 Number of nX5 zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.

This page as a plain text file.
%I A201987 #6 Jul 22 2025 16:25:47
%S A201987 32,139471,803133854,3674187761233,13189629907532856,
%T A201987 38785259210265819578
%N A201987 Number of nX5 zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.
%C A201987 Column 5 of A201989
%e A201987 Some solutions for n=2
%e A201987 .-3.-1..0..2..3...-3.-3..2..2..3...-3.-1..0..2..3...-3.-1..2..2..3
%e A201987 ..2..2..0.-2.-3....2..3.-2.-2.-2....3..2.-3.-1.-2...-3..2..0..0.-2
%K A201987 nonn
%O A201987 1,1
%A A201987 _R. H. Hardin_ Dec 07 2011

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.