A281138 - OEIS

A281138

Number of n X 7 0..2 arrays with no element equal to more than one of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%I #6 Dec 28 2023 19:18:58

%S 94,11712,32692,27218,33199,51158,85874,144256,244623,428484,747152,

%T 1278134,2146672,3549190,5803459,9465536,15485913,25464946,41965199,

%U 69135700,113521499,185665582,302427845,491382680,797156409,1292806478

%N Number of n X 7 0..2 arrays with no element equal to more than one of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%C Column 7 of A281139.

%H R. H. Hardin, <a href="/A281138/b281138.txt">Table of n, a(n) for n = 1..83</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A281139.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 15 2017