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 A264144 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change +-(.,.) 0,0 1,-2 or 1,1. 1

%I

%S 16,512,14400,297920,7001316,163887724,3798503424,88222777344,

%T 2044040513284,47341085896775,1096581934350825,25398950018267007,

%U 588299914903045444,13626292315183613964,315613062527522527296

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

%C Row 4 of A264142.

%H R. H. Hardin, <a href="/A264144/b264144.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A264144/a264144.txt">Empirical recurrence of order 95</a>

%F Empirical recurrence of order 95 (see link above)

%e Some solutions for n=3

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

%e ..4.10..6..7....4..5..8..9....2..5..6..9....4..3..6..2....9..3..8..2

%e ..8..9..5.13....6..7.12.13....8..7.15.11....8..9.15.11....6..4.15.11

%e .12.11.19.15...10.11.19.15...17.13.14.10...17.18.19.10...12.13.16.10

%e .16.17.18.14...16.17.18.14...16.12.18.19...16.12.13.14...14.17.18.19

%Y Cf. A264142.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 04 2015

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Last modified February 4 02:26 EST 2023. Contains 360045 sequences. (Running on oeis4.)