The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A208767

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A208767

Generalized 2-super abundant numbers.
(history; published version)

#28 by Joerg Arndt at Sun Sep 25 04:28:09 EDT 2022

STATUS

reviewed

approved

#27 by Michel Marcus at Sun Sep 25 03:37:16 EDT 2022

STATUS

proposed

reviewed

#26 by Amiram Eldar at Sun Sep 25 03:26:16 EDT 2022

STATUS

editing

proposed

#25 by Amiram Eldar at Sun Sep 25 03:13:09 EDT 2022

CROSSREFS

Cf. A002182, A004394, A004490, A002201, A001157, A013661, A017667, A017668.

#24 by Amiram Eldar at Sun Sep 25 03:12:09 EDT 2022

FORMULA

Limit_{n->oo} A001157(a(n))/a(n)^2 = zeta(2) (A013661). - Amiram Eldar, Sep 25 2022

CROSSREFS

Cf. A002182, A004394, A004490, A002201, A001157, A013661.

STATUS

approved

editing

#23 by OEIS Server at Wed Aug 21 06:01:44 EDT 2019

LINKS

Amiram Eldar, <a href="/A208767/b208767_1.txt">Table of n, a(n) for n = 1..251</a>

#22 by Alois P. Heinz at Wed Aug 21 06:01:44 EDT 2019

STATUS

reviewed

approved

Discussion

Wed Aug 21

06:01

OEIS Server: Installed new b-file as b208767.txt.  Old b-file is now b208767_1.txt.

#21 by Michel Marcus at Wed Aug 21 05:38:27 EDT 2019

STATUS

proposed

reviewed

#20 by Amiram Eldar at Wed Aug 21 05:29:14 EDT 2019

STATUS

editing

proposed

#19 by Amiram Eldar at Wed Aug 21 05:25:05 EDT 2019

LINKS

Srinivasa Ramanujan, <a href="http://dx.doi.org/10.1023/A:1009764017495">Highly composite numbers</a>, Annotated and with a foreword by Jean-Louis Nicolas and Guy Robin, The Ramanujan Journal, Vol. 1, No. 2 (1997), pp. 119-153, <a href="http://math.univ-lyon1.fr/homes-www/nicolas/ramanujanNR.pdf">alternative link</a>.