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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 1

%I #4 Sep 01 2012 12:53:09

%S 2,136,10900,12297870,4044766240,18383343930862,14216413305846436,

%T 166176901557427161788,238921763468063076499860,

%U 5737167226254078112766902750,13446078759879900390396507182880

%N 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 Column 7 of A216084

%H R. H. Hardin, <a href="/A216083/b216083.txt">Table of n, a(n) for n = 1..17</a>

%e Some solutions for n=4

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

%e ..1..x..0..x..3..x..4....1..x..0..x..2..x..1....1..x..0..x..2..x..3

%e ..x..4..x..0..x..5..x....x..3..x..0..x..4..x....x..2..x..0..x..4..x

%e ..0..x..2..x..1..x..2....0..x..2..x..3..x..4....3..x..4..x..3..x..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 01 2012

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)