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A264679 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1. 1

%I

%S 0,19,145,890,9205,88687,714235,5871821,50048019,422792433,3525222983,

%T 29504247476,247603962409,2074917109436,17373094676114,

%U 145530813422748,1219291683848838,10213817024920997,85555541651802803,716687147462600097

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

%C Row 4 of A264676.

%H R. H. Hardin, <a href="/A264679/b264679.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A264679/a264679.txt">Empirical recurrence of order 81</a>

%F Empirical recurrence of order 81 (see link above)

%e Some solutions for n=4

%e ..6..0..1..2..3...12..0..1..9..3....6..0..1..2..3....6..0..1..2..3

%e .17.12.13..7..4...11.18..2..7..4...12..5.19..7..4...17.12.14..7..4

%e ..5.18.11..8..9....5..6.24..8.13...16.10.11..8..9....5.23.24..8..9

%e .10.23.16.24.14...10.23.16.17.14...21.22.24.13.14...10.11.16.13.18

%e .15.20.21.22.19...15.20.21.22.19...15.20.17.18.23...15.20.21.22.19

%Y Cf. A264676.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 20 2015

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Last modified June 4 01:32 EDT 2020. Contains 334809 sequences. (Running on oeis4.)