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A096821
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Solutions to Mod[sigma(x),x]=12 of the form p*(p+13)/2 where p is a prime of form=2^j-13, of which j exponents are listed in A096818.
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1
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24, 304, 127744, 33501184, 8589082624, 10384593717069654320312270165377024, 822752278660603021077484591278411581166520461101278617407586304, 15177100720513508366558296147058741458142670970377727126573378340391656803557965824
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OFFSET
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1,1
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COMMENTS
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The relevant A084306 includes additional solution like 21, while A076496 contains solutions of 6k form too.
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LINKS
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EXAMPLE
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8th term is (2^136)*(-13+2^137) with 83 decimal digits; n=4: a[4]=(2^3)*(16-13)=24;
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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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