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A264210 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 0,2 or 1,0. 1

%I

%S 64,3600,202500,6444000,205062400,7664479280,286470082441,

%T 10230591902180,365361051936400,13232462572921540,479246665225414969,

%U 17287771862947893280,623618436332279833600,22524831425285054696000

%N Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 0,2 or 1,0.

%C Row 4 of A264207.

%H R. H. Hardin, <a href="/A264210/b264210.txt">Table of n, a(n) for n = 1..21</a>

%e Some solutions for n=2

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

%e ..0..4..5....5..4..8....5..4..3....5..7..3....6..1..2....3..4..8....6..1..2

%e ..6..7..8....3..7..6....8.10..6....8..4..6....3..7.11....6.10..5....8..7..5

%e .11.13..9...12.13.14....9..7.11...11.13..9....9.13..8....9..7.11...11.13..9

%e .12.10.14....9.10.11...12.13.14...12.10.14...12.10.14...12.13.14...12.10.14

%Y Cf. A264207.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 08 2015

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Last modified January 21 19:04 EST 2022. Contains 350480 sequences. (Running on oeis4.)