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.

A239154 Number of (n+1)X(5+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order.

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%I A239154 #5 Jul 23 2025 10:57:39
%S A239154 88,88,175471,3313304,821135900,42600989632,5469574400477,
%T A239154 407538214264758,41833224277157842,3546725280596974505,
%U A239154 336756665790055019124,29889788806323352149140
%N A239154 Number of (n+1)X(5+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order.
%C A239154 Column 5 of A239155
%e A239154 Some solutions for n=2
%e A239154 ..0..1..2..0..1..3....0..1..2..3..2..3....0..1..2..2..3..1....0..1..2..1..3..0
%e A239154 ..0..1..2..0..1..3....0..1..2..3..2..3....0..1..2..2..3..1....0..1..2..1..3..0
%e A239154 ..0..1..2..0..1..3....0..1..2..3..2..3....0..1..2..2..3..1....0..1..2..1..3..0
%K A239154 nonn
%O A239154 1,1
%A A239154 _R. H. Hardin_, Mar 11 2014

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