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A247769
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Number of tilings of a 5 X n rectangle using n pentominoes of any but the N shape.
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2
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1, 1, 5, 48, 423, 3082, 18998, 133083, 965175, 6907447, 48357538, 337492571, 2379164196, 16812509746, 118525108279, 834050273099, 5871294215587, 41366373307538, 291469733924989, 2053121255070040, 14460522145205162, 101855876591455305, 717493569094700741
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OFFSET
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0,3
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LINKS
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FORMULA
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a(n) ~ c * d^n, where d = 7.04397539498320599943308475324574337362579863618900362092946272591..., c = 0.15989322823686781502117997501523372089722059935465319293786933934... . - Vaclav Kotesovec, Mar 05 2016
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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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