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.

A240190 Number of nX5 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or three plus the sum of the elements diagonally to its northwest, modulo 4.

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%I A240190 #6 Jun 02 2025 09:41:40
%S A240190 1,26,478,5240,91879,1005029,14022582,206345434,2336659626,
%T A240190 33576330306,449366013476,5493251593060,78352851554194,
%U A240190 1004322433621964,12914862745129353,179013685774367710,2278292415139416158
%N A240190 Number of nX5 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or three plus the sum of the elements diagonally to its northwest, modulo 4.
%C A240190 Column 5 of A240192
%H A240190 R. H. Hardin, <a href="/A240190/b240190.txt">Table of n, a(n) for n = 1..210</a>
%e A240190 Some solutions for n=4
%e A240190 ..2..0..0..0..0....2..0..0..0..0....2..0..0..0..0....2..0..0..0..0
%e A240190 ..1..2..0..2..2....2..0..0..0..0....1..0..2..0..0....1..2..2..0..0
%e A240190 ..1..2..0..2..2....2..3..0..0..0....2..3..0..2..0....2..1..0..2..2
%e A240190 ..2..3..0..0..0....2..3..3..2..0....1..3..1..0..2....1..2..0..1..2
%K A240190 nonn
%O A240190 1,2
%A A240190 _R. H. Hardin_, Apr 02 2014