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 A264073 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 0,1 or 1,2. 1

%I

%S 16,377,12100,239580,5645376,130697424,3057071776,70815364224,

%T 1640245587376,37991496430624,879962725844576,20381782810954224,

%U 472084850498355776,10934475563176382624,253265394378463623376

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

%C Row 4 of A264071.

%H R. H. Hardin, <a href="/A264073/b264073.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 24*a(n-1) -19*a(n-2) -11*a(n-3) +36*a(n-4) +3*a(n-5) for n>9

%e Some solutions for n=3

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

%e ..4..0..6..2...10..5.11..2....4.11..1..7....4..0..1..2....4.10..6..2

%e .13..9.15.11....8.15..4..6...14..9.15..5....8..9.10.11...14..9..5.11

%e .17..8.14.10...17.18.14..9...17.18..8.10...18.13.14.15...18..8.19.15

%e .16.12.18.19...16.12.13.19...16.12.13.19...16.17.12.19...16.17.12.13

%Y Cf. A264071.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 02 2015

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Last modified December 9 05:44 EST 2021. Contains 349627 sequences. (Running on oeis4.)