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A223334 Rolling cube footprints: number of 5Xn 0..7 arrays starting with 0 where 0..7 label vertices of a cube and every array movement to a horizontal or antidiagonal neighbor moves along a corresponding cube edge 1

%I #4 Mar 19 2013 12:05:51

%S 4096,19683,1750329,155649627,13876429707,1237689159021,

%T 110409049892673,9849460912651899,878665830242295627,

%U 78385506226393458141,6992749153173468569913,623821244550672567090699

%N Rolling cube footprints: number of 5Xn 0..7 arrays starting with 0 where 0..7 label vertices of a cube and every array movement to a horizontal or antidiagonal neighbor moves along a corresponding cube edge

%C Row 5 of A223331

%H R. H. Hardin, <a href="/A223334/b223334.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 131*a(n-1) -4376*a(n-2) +62456*a(n-3) -430316*a(n-4) +1335338*a(n-5) -688543*a(n-6) -5374827*a(n-7) +10631682*a(n-8) -5437152*a(n-9) for n>13

%e Some solutions for n=3

%e ..0..4..0....0..4..0....0..4..0....0..4..0....0..4..0....0..4..0....0..4..0

%e ..0..4..6....0..2..6....6..4..6....0..4..5....0..4..6....0..2..3....0..4..0

%e ..0..4..0....3..2..0....6..7..5....5..4..6....5..4..5....3..7..3....6..2..3

%e ..0..4..5....0..2..3....6..4..0....6..7..5....5..1..0....3..1..0....6..2..0

%e ..6..4..5....6..7..3....0..2..6....5..1..5....3..2..6....3..1..3....6..2..0

%e Vertex neighbors:

%e 0 -> 1 2 4

%e 1 -> 0 3 5

%e 2 -> 0 3 6

%e 3 -> 1 2 7

%e 4 -> 0 5 6

%e 5 -> 1 4 7

%e 6 -> 2 4 7

%e 7 -> 3 5 6

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 19 2013

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)