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 A264475 Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,1 1,0 2,1 or -1,-1. 1

%I #4 Nov 14 2015 15:36:33

%S 0,76,484,11044,215607,4039259,74367790,1358980008,25131223920,

%T 454913826610,8308148502158,150817534124764,2737572458162063,

%U 49698482940927931,901239835437298103,16348456871339244625

%N Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,1 1,0 2,1 or -1,-1.

%C Column 7 of A264476.

%H R. H. Hardin, <a href="/A264475/b264475.txt">Table of n, a(n) for n = 1..147</a>

%e Some solutions for n=4

%e ..9..0.11.12..3..4.15..6....9..0..1.12.13.14..5..6....9..0.11.12.13.14.15..6

%e .17..8..2.10.21..5.13..7...17.18..2..3..4.22.23..7...17..1..2..3..4..5.23..7

%e .25.26..1.18.19.20.14.22...25.26.10.11.19.20.21.15...25.16.27.18.29.20.31.22

%e .16.34.35.36.37.38.39.23...16..8.35.36.27.38.39.30...33..8.35.10.37.28.39.30

%e .24.32.33.27.28.29.30.31...24.32.33.34.28.29.37.31...24.32.26.34.19.36.21.38

%Y Cf. A264476.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 14 2015

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Last modified March 4 09:58 EST 2024. Contains 370528 sequences. (Running on oeis4.)