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.

A223059 Number of nX5 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order.

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%I A223059 #6 Jul 23 2025 03:26:42
%S A223059 51,19360,9383963,4606719559,2266567594841,1115636153544055,
%T A223059 549172612438350029,270334270159303305523,133074373792931796543737,
%U A223059 65507037468442048450168351,32246421320132829050759287877
%N A223059 Number of nX5 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order.
%C A223059 Column 5 of A223062
%H A223059 R. H. Hardin, <a href="/A223059/b223059.txt">Table of n, a(n) for n = 1..210</a>
%e A223059 Some solutions for n=3
%e A223059 ..0..0..0..0..0....0..0..0..1..0....0..0..0..0..1....0..0..0..1..0
%e A223059 ..1..2..1..1..1....2..2..3..0..2....2..3..2..1..0....2..2..2..0..1
%e A223059 ..2..3..2..3..3....1..0..3..2..0....0..0..1..3..3....0..1..1..2..1
%K A223059 nonn
%O A223059 1,1
%A A223059 _R. H. Hardin_ Mar 13 2013