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A240473
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Distance from prime(n) to the closest smaller squarefree number.
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6
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1, 1, 2, 1, 1, 2, 2, 2, 1, 3, 1, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 4, 1, 1, 2, 2, 4, 1, 3, 1, 3, 2, 2, 2, 1, 3, 1, 2, 1, 2, 2, 2, 1, 1, 1, 2, 2, 1, 2, 2, 2, 1, 2, 2, 3, 3, 1, 2, 2, 1, 2, 3, 1, 2, 1, 2, 4, 1, 1, 2, 2, 1, 3, 2, 2, 2, 1, 2, 1, 2, 1, 1
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OFFSET
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1,3
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LINKS
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FORMULA
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EXAMPLE
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a(10) = 3 because 3 is the gap between prime(10) = 29 and the closest smaller squarefree number 26.
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PROG
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(PARI) forprime(p=1, 450, forstep(j=p-1, 1, -1, if(issquarefree(j), print1(p-j", "); break)))
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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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