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A038363
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Two different numbers a, b which satisfy sigma(a)=sigma(b)=(a+b)^3/(a^2+b^2) are called a rational amicable pair; sequence gives b numbers.
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1
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OFFSET
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1,1
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COMMENTS
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These are just the known values. There is no proof that this sequence is correct (in the usual sense that there are no other terms below the last term shown). - N. J. A. Sloane, Nov 07 2006
Factorization: 2^(n-1)*M(n)*3*5^2*13*31*139*277*3877*239 where M(n) is Mersenne Prime, n=3 or 5<n.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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