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 A234375 Number of (n+2)X(2+2) 0..2 arrays with no increasing sequence of length 3 horizontally or diagonally downwards 1

%I #6 Dec 25 2013 09:47:26

%S 406416,24485940,1443868938,84764693441,4966249171199,290807719744802,

%T 17025314469552162,996684368791537441,58345976442195013994,

%U 3415554697297597829788,199945020738674492679622

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

%C Column 2 of A234380

%H R. H. Hardin, <a href="/A234375/b234375.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A234375/a234375.txt">Empirical recurrence of order 55</a>

%F Empirical recurrence of order 55 (see link above)

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 25 2013

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Last modified March 3 17:13 EST 2024. Contains 370512 sequences. (Running on oeis4.)