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A264881 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.

%I A264881 #4 Nov 27 2015 07:37:11
%S A264881 2,0,20,12,572,2348,22152,129230,915192,5625202,37271957,233347958,
%T A264881 1512344735,9550825980,61315204660,389091647972,2487355416820,
%U A264881 15822559226124,100953094987052,642909203731360,4098621203473156
%N A264881 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.
%C A264881 Row 4 of A264878.
%H A264881 R. H. Hardin, <a href="/A264881/b264881.txt">Table of n, a(n) for n = 1..210</a>
%e A264881 Some solutions for n=4
%e A264881 ..1..2.12..4.14....1..2..3..4.14....1..2..3..4.14....1..2.12..4.14
%e A264881 .15..0.17..9..3...15..0..8..9.19....6..0.17..9.19...15..0..8..9..3
%e A264881 .20..5..6..7..8...20..5..6..7.24...20..5.22..7..8...20..5..6..7.24
%e A264881 .16.10.11.19.13...16.10.11.12.13...16.10.11.12.13...16.10.11.19.13
%e A264881 .21.22.23.24.18...21.22.23.17.18...21.15.23.24.18...21.22.23.17.18
%Y A264881 Cf. A264878.
%K A264881 nonn
%O A264881 1,1
%A A264881 _R. H. Hardin_, Nov 27 2015