The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A034898

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A034898

n-th term of A034897 is an a(n)-hyperperfect number.
(history; published version)

#26 by Sean A. Irvine at Fri May 10 16:10:27 EDT 2019

STATUS

proposed

approved

#25 by Hans Loeblich at Fri May 10 15:45:20 EDT 2019

STATUS

editing

proposed

#24 by Hans Loeblich at Fri May 10 15:44:06 EDT 2019

PROG

(PARI) forcomposite(n=2, 10^8, if(1==Mod(n, sigma(n)-n-1), print1((n-1)/(sigma(n)-n-1)", "))) \\ Hans Loeblich, May 10 2019

STATUS

approved

editing

#23 by Joerg Arndt at Thu Jan 01 12:43:59 EST 2015

STATUS

proposed

approved

#22 by Michel Marcus at Thu Jan 01 05:56:06 EST 2015

STATUS

editing

proposed

#21 by Michel Marcus at Thu Jan 01 05:55:56 EST 2015

LINKS

J. Judson S. McCranie, <a href="httphttps://www.cs.uwaterloo.ca/journals/JIS/indexVOL3/mccranie.html">A study Study of Hyperperfect Numbers</a>, Journal of hyperperfect numbers, J. Int. Seqs. Integer Sequences, Vol. 3 (2000) #P00, Article 00.1.3</a>.

STATUS

approved

editing

#20 by R. J. Mathar at Fri Dec 07 12:23:51 EST 2012

STATUS

editing

approved

#19 by R. J. Mathar at Fri Dec 07 12:23:46 EST 2012

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/HyperperfectNumber.html">Link to a section of The World of MathematicsHyperperfect Number.</a>

STATUS

approved

editing

#18 by Bruno Berselli at Tue Nov 20 05:26:55 EST 2012

STATUS

editing

approved

#17 by Bruno Berselli at Tue Nov 20 05:26:52 EST 2012

EXTENSIONS

More terms by _from _Donovan Johnson_, Nov 20 2012

STATUS

approved

editing