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A264509 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change -1,1 0,-1 0,1 or 1,0. 1

%I

%S 3,4,46,211,1235,6613,35356,190821,1011749,5421768,28792154,153620113,

%T 816896091,4350802828,23148597981,123215728220,655679557091,

%U 3489443791907,18569349596613,98819234593206,525875795408590

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

%C Row 3 of A264506.

%H R. H. Hardin, <a href="/A264509/b264509.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A264509/a264509.txt">Empirical recurrence of order 69</a>

%F Empirical recurrence of order 69 (see link above)

%e Some solutions for n=4

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

%e ..6..5..2..9..4....6..7..2..9.13....0.10.11..9..4....0.10..2..3.13

%e .11.12.16.17.13....5.15.16.17.18....5.15.13..8.18...11.15..7.12..9

%e .10.15.18.19.14...10.11.12.19.14...16.17.12.19.14...16.17.18.19.14

%Y Cf. A264506.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 15 2015

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Last modified September 22 05:11 EDT 2021. Contains 347605 sequences. (Running on oeis4.)