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A233493 Number of (n+2) X (4+2) 0..2 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards. 1

%I #6 Sep 04 2022 11:23:51

%S 205862149,108934667695,57417306351598,30258000792128359,

%T 15945021790711870267,8402516744270059192510,

%U 4427856941758752650124295,2333338629541317978393143944,1229594638242708728348131570618

%N Number of (n+2) X (4+2) 0..2 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards.

%C Column 4 of A233497.

%H R. H. Hardin, <a href="/A233493/b233493.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%Y Cf. A233497.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 11 2013

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Last modified April 20 00:03 EDT 2024. Contains 371798 sequences. (Running on oeis4.)