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.

A240325 Number of n X 5 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

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%I A240325 #6 May 17 2021 15:14:15
%S A240325 8,80,1677,21455,247187,3898804,43979526,602874070,8649395684,
%T A240325 101952716878,1438937234148,19175029391887,237935384258519,
%U A240325 3335405244297922,43049779553837333,556801688251633585
%N A240325 Number of n X 5 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
%C A240325 Column 5 of A240327.
%H A240325 R. H. Hardin, <a href="/A240325/b240325.txt">Table of n, a(n) for n = 1..210</a>
%e A240325 Some solutions for n=4
%e A240325 ..3..2..2..2..3....2..3..2..2..3....3..2..3..2..3....3..2..3..3..2
%e A240325 ..2..3..0..0..0....3..1..1..0..0....2..3..0..3..2....2..3..2..2..3
%e A240325 ..2..0..1..1..2....3..2..2..0..2....3..2..2..2..0....3..2..0..0..3
%e A240325 ..2..0..1..2..3....2..3..0..3..3....2..1..0..2..3....3..1..3..2..3
%Y A240325 Cf. A240327.
%K A240325 nonn
%O A240325 1,1
%A A240325 _R. H. Hardin_, Apr 03 2014