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 A264572 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 1,1 0,-1 or -1,1. 1

%I

%S 2,8,31,192,1130,8356,47571,305844,1871556,11815440,73467099,

%T 457338532,2850911356,17771612880,110773680091,690026338272,

%U 4300552632388,26800830750202,167010622956533,1040699613256184,6485315542593720

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

%C Row 4 of A264569.

%H R. H. Hardin, <a href="/A264572/b264572.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A264572/a264572.txt">Empirical recurrence of order 56</a>

%F Empirical recurrence of order 56 (see link above)

%e Some solutions for n=4

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

%e ..0.10..2.12.13....0.10.11..9.13....6..0.11..9..4....0.10.11..3..4

%e .11..6..7.14..9....5..6..7.14.18....5.12.13.14.18....5.15.13.17..9

%e .16.20.18.22.23...16.20.12.22.23...10.20.21.22.23...16.20.12.19.14

%e .21.15.17.24.19...21.15.17.24.19...15.16.17.24.19...21.22.23.24.18

%Y Cf. A264569.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 17 2015

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Last modified February 29 05:25 EST 2020. Contains 332353 sequences. (Running on oeis4.)