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A063680
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Solutions to sigma(n)+7 = sigma(n+7).
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2
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OFFSET
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1,1
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COMMENTS
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No other solutions < 4,290,000,000. Sequence A063679 shows how to generate more solutions, but there may be solutions other than those produced by A063679.
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LINKS
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Table of n, a(n) for n=1..3.
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EXAMPLE
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sigma(74)+7 = 121 = sigma(74+7), so 74 is in the sequence.
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CROSSREFS
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Cf. A000203, A063679, A015913-A015917, A054905.
Sequence in context: A093274 A145695 A116132 * A220472 A033395 A143754
Adjacent sequences: A063677 A063678 A063679 * A063681 A063682 A063683
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KEYWORD
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nonn,bref
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AUTHOR
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Jud McCranie, Jul 28 2001
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STATUS
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approved
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