A263517 - OEIS

A263517

Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 filled by rows with each element moved a city block distance of 0 or 1, and rows and columns in increasing lexicographic order.

%I #6 Nov 10 2015 12:14:08

%S 93,10350,1317780,162207955,20339400914,2543460828164,319022980139204,

%T 40028581755172441,5025951440933512579,631220496156096648485,

%U 79292571943138559531790,9961616809463166444531295

%N Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 filled by rows with each element moved a city block distance of 0 or 1, and rows and columns in increasing lexicographic order.

%C Column 6 of A263519.

%H R. H. Hardin, <a href="/A263517/b263517.txt">Table of n, a(n) for n = 1..147</a>

%e Some solutions for n=2

%e ..0..1..2..3..4..5..6....0..1..2..3..4.12.13....0..1..2..3..4..5.13

%e ..7..8.10.11.18.13.20...14..7.16.11.10..5..6....7.15..8.11.18.12..6

%e .15.14..9.16.17.12.19...15..8..9.17.18.19.20...14.16..9.10.17.19.20

%Y Cf. A263519.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 19 2015