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 A266057 Number of 3Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than or equal to itself. 1

%I

%S 1,35,20,302,10310,127492,1590691,20375630,280811810,3864301448,

%T 50179179330,655917215158,8775960264661,116907223558842,

%U 1546866861474179,20490542758690403,271954342187521110,3609318415540677192

%N Number of 3Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than or equal to itself.

%C Row 3 of A266055.

%H R. H. Hardin, <a href="/A266057/b266057.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A266057/a266057.txt">Empirical recurrence of order 94</a>

%F Empirical recurrence of order 94 (see link above)

%e Some solutions for n=4

%e ..0..3..0..2....1..0..3..0....1..0..2..0....0..3..1..1....1..0..1..2

%e ..0..4..1..0....2..0..4..1....1..4..2..2....0..4..4..0....1..4..0..2

%e ..0..3..2..0....1..2..0..1....0..3..0..1....1..1..3..0....0..3..1..1

%Y Cf. A266055.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 20 2015

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Last modified May 23 14:57 EDT 2022. Contains 353975 sequences. (Running on oeis4.)