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A198651 Number of nX4 0..6 arrays with values 0..6 introduced in row major order and each element equal to at least one horizontal or vertical neighbor 1

%I

%S 2,76,3904,344008,39898934,5870175231,996290832880,184906809944845,

%T 35956430134255744,7167834458473450500,1446698354699811336454,

%U 293844456856748839234741,59872951529043615795454004

%N Number of nX4 0..6 arrays with values 0..6 introduced in row major order and each element equal to at least one horizontal or vertical neighbor

%C Column 4 of A198654

%H R. H. Hardin, <a href="/A198651/b198651.txt">Table of n, a(n) for n = 1..28</a>

%e Some solutions with all values 0 to 6 for n=4

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

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

%e ..5..3..4..4....3..4..4..5....4..5..5..3....3..3..4..4....3..4..5..6

%e ..5..6..6..6....6..6..6..5....4..6..6..3....5..5..6..6....3..4..5..6

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 28 2011

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Last modified January 30 08:53 EST 2023. Contains 359942 sequences. (Running on oeis4.)