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 A277941 Number of nX4 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero. 1

%I

%S 0,74,2353,84970,2967962,103960169,3638916907,127378891305,

%T 4458779090218,156075459353260,5463275862035992,191236872538989228,

%U 6694068173580106896,234319606216204278149,8202139030768885667342,287108218400489269268262

%N Number of nX4 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

%C Column 4 of A277945.

%H R. H. Hardin, <a href="/A277941/b277941.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A277941/a277941.txt">Empirical recurrence of order 70</a>

%F Empirical recurrence of order 70 (see link above)

%e Some solutions for n=4

%e ..0..1..0..2. .0..2..1..2. .0..1..0..0. .0..1..2..0. .0..0..1..0

%e ..1..2..1..0. .1..0..1..0. .2..2..1..1. .0..0..2..1. .1..2..2..2

%e ..1..1..2..1. .2..0..1..2. .0..1..0..2. .2..2..1..0. .2..0..2..0

%e ..0..1..1..0. .2..1..1..0. .0..0..0..1. .1..1..0..2. .1..1..2..1

%Y Cf. A277945.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 05 2016

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Last modified January 27 13:04 EST 2022. Contains 350607 sequences. (Running on oeis4.)