A300877 - OEIS

%I #4 Mar 14 2018 07:18:00

%S 8,50,148,589,2264,8739,34693,138559,556973,2247619,9087826,36797650,

%T 149145738,604912470,2454539244,9962718432,40445652520,164218445897,

%U 666820225171,2707820511258,10996313658874,44656547438787

%N Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 4 of A300881.

%H R. H. Hardin, <a href="/A300877/b300877.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A300877/a300877.txt">Empirical recurrence of order 97</a>

%F Empirical recurrence of order 97 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300881.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 14 2018