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.

A223662 Number of nX4 0..3 arrays with row sums unimodal and column sums inverted unimodal.

This page as a plain text file.
%I A223662 #5 Jul 23 2025 04:21:44
%S A223662 130,29922,5285887,761845474,93974096640,10253839694278,
%T A223662 1013084819998517,92199924066276051,7830543600441814997,
%U A223662 626952495503328450002
%N A223662 Number of nX4 0..3 arrays with row sums unimodal and column sums inverted unimodal.
%C A223662 Column 4 of A223663
%e A223662 Some solutions for n=3
%e A223662 ..2..2..3..2....0..0..0..0....0..0..0..2....2..2..0..0....2..2..2..2
%e A223662 ..2..2..0..2....1..0..0..2....3..0..0..2....2..2..1..0....2..2..1..2
%e A223662 ..3..2..0..1....0..1..3..1....2..2..0..0....2..1..3..1....2..0..2..1
%K A223662 nonn
%O A223662 1,1
%A A223662 _R. H. Hardin_ Mar 25 2013

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

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