The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A068346 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A068346

a(n) = n'' = second arithmetic derivative of n.
(history; published version)

#53 by Alois P. Heinz at Fri Oct 27 19:47:10 EDT 2023

STATUS

editing

approved

#52 by Alois P. Heinz at Fri Oct 27 19:47:07 EDT 2023

LINKS

T. D. Noe and Alois P. Heinz, <a href="/A068346/b068346.txt">Table of n, a(n) for n = 0..10000</a> (first 2000 terms from T. D. Noe)

STATUS

approved

editing

#51 by Michael De Vlieger at Wed Oct 18 10:03:38 EDT 2023

STATUS

reviewed

approved

#50 by Michel Marcus at Tue Oct 17 00:56:24 EDT 2023

STATUS

proposed

reviewed

#49 by Michel Marcus at Tue Oct 17 00:56:14 EDT 2023

STATUS

editing

proposed

#48 by Michel Marcus at Tue Oct 17 00:55:52 EDT 2023

COMMENTS

Indices of a(n) records > 0 appear to all belong to A116882. - Bill McEachen, Oct 16 2023

STATUS

proposed

editing

#47 by Bill McEachen at Mon Oct 16 15:36:38 EDT 2023

STATUS

editing

proposed

Discussion

Mon Oct 16

17:13

Michel Marcus: submit sequence of indices of records ?

17:23

Bill McEachen: @Michel my interest stops at finding the connection but perhaps someone else ( my "Q" is always backlogged)

#46 by Bill McEachen at Mon Oct 16 15:34:09 EDT 2023

COMMENTS

Indices of a(n) records > 0 appear to all belong to A116882. - Bill McEachen, Oct 16 2023

STATUS

proposed

editing

Discussion

Mon Oct 16

15:36

Bill McEachen: ok, back in

#45 by Bill McEachen at Mon Oct 16 14:48:11 EDT 2023

STATUS

editing

proposed

Discussion

Mon Oct 16