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A171511
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Numbers that are not the sum of the k-th composite number and k for any k >= 1.
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2
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1, 2, 3, 4, 6, 7, 9, 10, 12, 14, 16, 17, 19, 20, 22, 24, 26, 27, 29, 30, 32, 34, 36, 37, 39, 41, 43, 45, 47, 48, 50, 51, 53, 55, 57, 59, 61, 62, 64, 66, 68, 69, 71, 72, 74, 76, 78, 79, 81, 83
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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MAPLE
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Comps:= remove(isprime, [$4..200]):
A:= {seq(Comps[i]+i, i=1..nops(Comps))}:
sort(convert({$1..max(A)} minus A, list)); # Robert Israel, Mar 23 2020
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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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