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A207500 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically 11

%I #5 Mar 31 2012 12:37:18

%S 2,4,4,6,16,6,9,36,36,9,13,81,102,81,14,18,169,283,297,196,22,25,324,

%T 699,1004,932,484,35,34,625,1526,2942,3939,2974,1225,56,46,1156,3355,

%U 7305,14253,15495,9723,3136,90,62,2116,6888,17911,41938,68745,62530,32164

%N T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically

%C Table starts

%C ..2....4.....6......9......13......18.......25........34........46.........62

%C ..4...16....36.....81.....169.....324......625......1156......2116.......3844

%C ..6...36...102....283.....699....1526.....3355......6888.....13954......27816

%C ..9...81...297...1004....2942....7305....17911.....40262.....87990.....187012

%C .14..196...932...3939...14253...41938...122061....319798....813724....2009628

%C .22..484..2974..15495...68745..237576...804887...2408502...6896518...18962878

%C .35.1225..9723..62530..343310.1413961..5715255..20090516..67370124..216796950

%C .56.3136.32164.253747.1714707.8384076.40046975.163471950.628620128.2300337450

%H R. H. Hardin, <a href="/A207500/b207500.txt">Table of n, a(n) for n = 1..390</a>

%e Some solutions for n=4 k=3

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

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

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

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

%Y Column 1 is A001611(n+2)

%Y Column 2 is A207436

%Y Row 1 is A171861(n+1)

%Y Row 2 is A207025

%Y Row 3 is A207243

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Feb 18 2012

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)