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A085103
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Indices of zeros in A085102.
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1
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1, 8, 12, 18, 22, 27, 32, 36, 39, 42, 45, 48, 49, 50, 54, 62, 66, 68, 69, 70, 75, 77, 81, 82, 87, 91, 94, 95, 98, 99, 100, 102, 104, 106, 110, 115, 116, 119, 121, 122, 125, 128, 129, 132, 133, 134, 138, 142, 146, 150, 154, 159, 160, 162, 165, 169, 170, 171, 175, 176
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listen;
history;
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internal format)
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OFFSET
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1,2
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LINKS
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EXAMPLE
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8 is a member as 8, 8+4, 8+4+2 or 8+4+2+1 (8,12,14 and 15) all are composite.
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PROG
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(PARI) isok(n) = {d = divisors(n); p = 0; forstep (i=#d, 1, -1, p += d[i]; if (isprime(p), return (0)); ); return (1); } \\ Michel Marcus, Sep 17 2013
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 03 2003
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EXTENSIONS
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STATUS
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approved
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