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A324157
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Number of terms in the n-th row of the triangle A324156.
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1
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OFFSET
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2,1
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COMMENTS
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The offset is 2 for compatibility with the definition of A324156.
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LINKS
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FORMULA
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a(n) <= A324155(n) - A324154(n) + 1, equality holds for n = 2 and n = 5 (and possibly for further terms).
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EXAMPLE
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a(2) = 3 since there are 3 numbers m such that number of prime numbers <= m is equal to the number of base-2 zerofree numbers <= m: these are 2, 3, 4 (= row #2 of A324156).
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CROSSREFS
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KEYWORD
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hard,nonn,base,more
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AUTHOR
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STATUS
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approved
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