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 A300535 Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 08 2018 12:23:39

%S 1,16,36,300,1436,8974,52012,311037,1845926,11005063,65583577,

%T 390991796,2331383710,13900965032,82892406341,494278699068,

%U 2947415376806,17575447550343,104803246864144,624945156416678,3726574928599652

%N Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 4 of A300539.

%H R. H. Hardin, <a href="/A300535/b300535.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A300535/a300535.txt">Empirical recurrence of order 75</a>

%F Empirical recurrence of order 75 (see link above)

%e Some solutions for n=5

%e ..0..0..0..1. .0..0..1..1. .0..1..0..0. .0..0..0..0. .0..0..0..1

%e ..0..0..1..1. .0..1..1..1. .1..1..0..1. .0..1..1..0. .0..1..0..0

%e ..1..1..0..0. .0..0..0..0. .1..1..1..1. .1..1..0..0. .1..1..0..0

%e ..1..1..0..0. .1..1..0..1. .0..0..0..1. .1..0..1..0. .1..1..0..1

%e ..1..1..0..0. .1..1..1..1. .0..0..1..1. .0..0..0..0. .0..1..1..1

%Y Cf. A300539.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 08 2018

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Last modified August 11 07:13 EDT 2024. Contains 375059 sequences. (Running on oeis4.)