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A263818 Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,0 0,1 0,2 or 1,0 1

%I

%S 32,948,18776,333429,6425985,124854432,2392853088,45898515536,

%T 882504683737,16961728977667,325906704633704,6262921821080860,

%U 120359817883976272,2313001901843303293,44449848853940930817

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

%C Row 2 of A263816

%H R. H. Hardin, <a href="/A263818/b263818.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..2..3..0..1....0..1..2..7....1..3..6..7....1..3..6..2....2..0..1..3

%e ..6..7..5.11....4..5.10..3....0..5..2.11....0..9..7..5....4..6..7..5

%e ..4..9..8.10....8.11..6..9....4.10..8..9....4.11..8.10....8.10..9.11

%Y Cf. A263816

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 27 2015

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Last modified September 28 18:53 EDT 2022. Contains 357081 sequences. (Running on oeis4.)