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A223349 3X3X3 triangular graph without horizontal edges coloring a rectangular array: number of nX5 0..5 arrays where 0..5 label nodes of a graph with edges 0,1 0,2 1,3 1,4 2,4 2,5 and every array movement to a horizontal or vertical neighbor moves along an edge of this graph 1
140, 4908, 202264, 7918948, 329268616, 12912752876, 537001573656, 21060038730884, 875825392204488, 34348003384801484, 1428433095896220376, 56020099749013006372, 2329712263359378360328, 91366346681513601154476 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A223352
LINKS
FORMULA
Empirical: a(n) = 1711*a(n-2) -132500*a(n-4) +3202240*a(n-6) -28936448*a(n-8) +102379520*a(n-10) -106561536*a(n-12) for n>13
EXAMPLE
Some solutions for n=3
..1..0..2..4..1....0..1..0..2..5....4..1..4..1..3....0..2..0..2..4
..3..1..0..2..0....1..4..2..5..2....1..3..1..0..1....2..0..2..4..2
..1..0..2..0..2....0..1..0..2..0....0..1..4..1..0....0..2..4..2..5
CROSSREFS
Sequence in context: A264310 A128193 A061607 * A282613 A202786 A035820
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 19 2013
STATUS
approved

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Last modified February 27 18:40 EST 2024. Contains 370378 sequences. (Running on oeis4.)