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A247828
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Number of tilings of a 5 X n rectangle using n pentominoes of any shape including exactly one X shape.
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2
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0, 0, 0, 1, 8, 76, 734, 7414, 71986, 638499, 5558790, 47971603, 410502410, 3473846885, 29078659564, 241699322196, 1997778940804, 16429720592636, 134489816829048, 1096404231410945, 8906880161717904, 72131791267258552, 582512418898356698, 4692186192041626600
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OFFSET
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0,5
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LINKS
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EXAMPLE
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a(3) = 1:
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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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