cp's OEIS Frontend

A264480 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,1 1,0 2,1 or -1,-1.

%I A264480 #4 Nov 14 2015 15:40:49
%S A264480 1,32,124,2232,24773,310748,4039259,50217832,620351086,7791932046,
%T A264480 96985215280,1205278291192,15033721660535,187188468194402,
%U A264480 2330142431854154,29024775202912332,361434709901725109
%N A264480 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,1 1,0 2,1 or -1,-1.
%C A264480 Row 6 of A264476.
%H A264480 R. H. Hardin, <a href="/A264480/b264480.txt">Table of n, a(n) for n = 1..210</a>
%e A264480 Some solutions for n=4
%e A264480 ..6..7..8..9..3....6..0..1..2..3....6..0..8..9..3....6..0..8..2..3
%e A264480 ..0..1..2.14..4...11.12.13.14..4...11..1..2.14..4...11..1.13..7..4
%e A264480 ..5.17.11.19.13....5.10..7..8..9...16.10..7.19.13....5.17.18.19..9
%e A264480 .10.22.12.24.18...21.15.23.17.18...21..5.12.24.18...10.22.16.24.14
%e A264480 .26.27.21.29.23...26.27.28.29.19...26.27.17.22.23...26.27.21.12.23
%e A264480 .20.15.16.34.28...20.32.16.34.24...20.15.33.34.28...20.15.33.34.28
%e A264480 .25.30.31.32.33...25.30.31.22.33...25.30.31.32.29...25.30.31.32.29
%Y A264480 Cf. A264476.
%K A264480 nonn
%O A264480 1,2
%A A264480 _R. H. Hardin_, Nov 14 2015