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A216083 Number of horizontal and antidiagonal neighbor colorings of the odd squares of an nX7 array with new integer colors introduced in row major order.

%I A216083 #6 Jul 22 2025 23:29:53
%S A216083 2,136,10900,12297870,4044766240,18383343930862,14216413305846436,
%T A216083 166176901557427161788,238921763468063076499860,
%U A216083 5737167226254078112766902750,13446078759879900390396507182880
%N A216083 Number of horizontal and antidiagonal neighbor colorings of the odd squares of an nX7 array with new integer colors introduced in row major order.
%C A216083 Column 7 of A216084
%H A216083 R. H. Hardin, <a href="/A216083/b216083.txt">Table of n, a(n) for n = 1..17</a>
%e A216083 Some solutions for n=4
%e A216083 ..x..0..x..1..x..2..x....x..0..x..1..x..0..x....x..0..x..1..x..0..x
%e A216083 ..1..x..0..x..3..x..4....1..x..0..x..2..x..1....1..x..0..x..2..x..3
%e A216083 ..x..4..x..0..x..5..x....x..3..x..0..x..4..x....x..2..x..0..x..4..x
%e A216083 ..0..x..2..x..1..x..2....0..x..2..x..3..x..4....3..x..4..x..3..x..1
%K A216083 nonn
%O A216083 1,1
%A A216083 _R. H. Hardin_ Sep 01 2012