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A281723
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Smallest positive integer that cannot be obtained as the number of linear extensions of a poset of size n.
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1
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OFFSET
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0,1
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COMMENTS
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a(n) is the smallest positive integer such that A160371(a(n)) > n.
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LINKS
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EXAMPLE
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a(8) = 253, so the number 253 cannot be obtained as the number of linear extensions of a poset of size 8, but every integer from 1 to 252 can.
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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