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A214182
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Number of 0..6 colorings of an nX4 array circular in the 4 direction with new values 0..6 introduced in row major order
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1
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4, 353, 147943, 96673866, 68272896836, 48807260151073, 34958661918205401, 25047104071770605888, 17946563397124532921734, 12859036484490635332784967, 9213742993368664938803040203, 6601822515414603719492440676662
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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Empirical: a(n) = 902*a(n-1) -142783*a(n-2) +7297504*a(n-3) -157308287*a(n-4) +1529846974*a(n-5) -7002462289*a(n-6) +14489273756*a(n-7) -12535263856*a(n-8) +3668758080*a(n-9)
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EXAMPLE
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Some solutions for n=4
..0..1..2..3....0..1..0..1....0..1..2..1....0..1..2..1....0..1..0..1
..1..3..1..4....1..0..1..2....1..0..3..4....2..3..4..5....1..0..2..0
..3..1..0..5....0..1..0..1....0..1..2..5....1..2..3..4....2..1..3..1
..5..2..3..4....3..4..5..4....6..0..1..4....5..4..0..6....4..2..1..2
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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