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A264209 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having index change +-(.,.) 0,0 0,2 or 1,0. 1

%I

%S 25,605,14641,223245,3404025,59040000,1024000000,17127328000,

%T 286470082441,4843377674701,81887459590561,1380241197441805,

%U 23264438445654025,392494549521588805,6621779062667769361

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

%C Row 3 of A264207.

%H R. H. Hardin, <a href="/A264209/b264209.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..2..1..0..3....2..3..0..1....2..3..6..1....0..5..2..3....2..3..0..1

%e ..6..5..4..7....8..9..4..5....0..7..4..5....8..1..4.11....8..5..4..7

%e .10.11.14..9...10.13..6..7....8..9.10.11...12..9..6..7...10.13..6.11

%e ..8.13.12.15...12.15.14.11...14.13.12.15...14.13.10.15...12..9.14.15

%Y Cf. A264207.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 08 2015

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Last modified January 29 05:09 EST 2022. Contains 350672 sequences. (Running on oeis4.)