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A267740 Number of nX6 arrays of permutations of 6 copies of 0..n-1 with every element equal to or 1 greater than any west or northeast neighbors modulo n and the upper left element equal to 0. 1

%I #4 Jan 20 2016 07:44:45

%S 1,462,786,3428,14138,55105,211044,807164,3087973,11817336,45232264,

%T 173151134,662878034,2537840433,9716563504,37202855866,142447146042,

%U 545436779876,2088564662921,7997681304224,30626181091364,117282753874594

%N Number of nX6 arrays of permutations of 6 copies of 0..n-1 with every element equal to or 1 greater than any west or northeast neighbors modulo n and the upper left element equal to 0.

%C Column 6 of A267742.

%H R. H. Hardin, <a href="/A267740/b267740.txt">Table of n, a(n) for n = 1..32</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A267742.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 20 2016

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)