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A263819 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having index change (+-,+-) 0,0 0,1 0,2 or 1,0 1

%I #6 Nov 10 2015 10:14:39

%S 121,11305,643905,31916832,1746531193,96761217077,5280184936704,

%T 288410304823557,15799152314227457,865337374046219193,

%U 47384715752967787849,2595217499912210034105,142150854161945612453920

%N Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having index change (+-,+-) 0,0 0,1 0,2 or 1,0

%C Row 3 of A263816

%H R. H. Hardin, <a href="/A263819/b263819.txt">Table of n, a(n) for n = 1..78</a>

%e Some solutions for n=2

%e ..0..2..5....3..2..1....0..1..2....1..4..2....2..1..0....0..4..2....3..1..5

%e ..3..1..4....0..7..4....5..3..4....0..5..3....4..5..3....3..1..5....0..4..2

%e ..8.10..7....6..8..5....8..6..7....6..7..8....6..7..8....9..8..6....8..7..6

%e ..6.11..9...11..9.10...10.11..9....9.10.11....9.10.11...10..7.11....9.10.11

%Y Cf. A263816

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 27 2015

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Last modified April 23 06:45 EDT 2024. Contains 371906 sequences. (Running on oeis4.)