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1, 2, 4, 6, 8, 12, 16, 24, 12, 24, 32, 48, 64, 48, 24, 120, 128, 36, 256, 96, 48, 96, 512, 240, 24, 192, 48, 192, 1024, 72, 2048, 720, 96, 384, 48, 144, 4096, 768, 192, 480, 8192, 144, 16384, 384, 96, 1536, 32768, 1440, 48, 72, 384, 768, 65536, 144, 96, 960, 768, 3072, 131072, 288, 262144, 6144, 192, 5040, 192, 288, 524288, 1536, 1536
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listen;
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internal format)
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OFFSET
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1,2
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COMMENTS
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Sequence contains only terms of A001013 and each a(n) is a multiple of A112624(n).
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LINKS
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FORMULA
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PROG
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(PARI)
A064989(n) = {my(f); f = factor(n); if((n>1 && f[1, 1]==2), f[1, 2] = 0); for (i=1, #f~, f[i, 1] = precprime(f[i, 1]-1)); factorback(f)};
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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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