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 A280959 Number of nX6 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. 1

%I #4 Jan 11 2017 15:16:07

%S 82,4850,63085,1121528,20029500,346289502,6052621154,105777297118,

%T 1846875100200,32253949107668,563278827019060,9836989060923111,

%U 171791531487108414,3000138481060751984,52393917402743354484

%N Number of nX6 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

%C Column 6 of A280961.

%H R. H. Hardin, <a href="/A280959/b280959.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..0..1..0..1..2..1. .0..1..0..1..0..2. .0..1..0..0..2..2. .0..1..0..1..1..0

%e ..2..0..1..0..2..1. .1..0..1..2..0..1. .2..1..2..1..0..1. .2..1..2..2..0..2

%e ..1..2..0..1..0..0. .2..2..0..2..1..2. .0..2..1..2..2..1. .0..0..1..1..2..1

%Y Cf. A280961.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 11 2017

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Last modified April 13 14:19 EDT 2024. Contains 371642 sequences. (Running on oeis4.)