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 A096738 Numbers n such that A096736(n) = (n*tau(n)-1)/(tau(n)-1). 3
 2, 3, 5, 7, 9, 10, 11, 13, 17, 19, 22, 23, 25, 29, 31, 34, 37, 41, 43, 46, 47, 49, 53, 55, 58, 59, 61, 67, 71, 73, 76, 78, 79, 81, 82, 83, 85, 89, 91, 94, 97, 101, 103, 106, 107, 109, 113, 115, 116, 118, 121, 127, 131, 133, 137, 139, 142, 145, 149, 151, 157, 163 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS (a(n)*tau(a(n))-1) mod (tau(a(n))-1) = 0; primes are a subsequence. LINKS G. C. Greubel, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[2, 500], (#*DivisorSigma[0, #] - 1)/(DivisorSigma[0, #] - 1) == Floor[(#*DivisorSigma[0, #] - 1)/(DivisorSigma[0, #] - 1)] &] (* G. C. Greubel, Nov 28 2016 *) CROSSREFS Cf. A000040. Sequence in context: A196499 A035061 A302403 * A167857 A117284 A137377 Adjacent sequences:  A096735 A096736 A096737 * A096739 A096740 A096741 KEYWORD nonn AUTHOR Reinhard Zumkeller, Jul 06 2004 STATUS approved

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Last modified August 15 16:57 EDT 2022. Contains 356148 sequences. (Running on oeis4.)