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Revision History for A083447

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Showing entries 1-10 | older changes

A083447

a(n) = floor( n*R(n)/(n+R(n))), where R(n) is the digit reversal of n (A004086).
(history; published version)

#19 by Wesley Ivan Hurt at Fri May 28 13:43:41 EDT 2021

STATUS

editing

approved

#18 by Wesley Ivan Hurt at Fri May 28 13:43:25 EDT 2021

CROSSREFS

Cf. A004086.

STATUS

approved

editing

#17 by N. J. A. Sloane at Fri Dec 15 17:36:20 EST 2017

EXTENSIONS

More terms from _Jason Earls (zevi_35711(AT)yahoo.com), _, May 23 2004

Discussion

Fri Dec 15

17:36

OEIS Server: https://oeis.org/edit/global/2722

#16 by R. J. Mathar at Mon Aug 25 11:52:17 EDT 2014

STATUS

editing

approved

#15 by R. J. Mathar at Mon Aug 25 11:52:12 EDT 2014

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (amarnath_murthymenakan_s(AT)yahoo.com), May 01 2003

STATUS

approved

editing

#14 by Joerg Arndt at Sun Apr 27 05:10:38 EDT 2014

STATUS

editing

approved

#13 by Joerg Arndt at Sun Apr 27 05:10:33 EDT 2014

NAME

a(n) = Floor[ floor( n*R(n)/{(n+R(n)}], )), where R(n) is the digit reversal of n (A004086).

#12 by Joerg Arndt at Sun Apr 27 05:10:06 EDT 2014

EXAMPLE

a(17) = Floor[floor(17*71/(17+71)] ) = Floor[ floor(1207/88] ) = 13.

STATUS

proposed

editing

#11 by Michel Marcus at Sun Apr 27 05:09:33 EDT 2014

STATUS

editing

proposed

#10 by Michel Marcus at Sun Apr 27 05:09:29 EDT 2014

NAME

a(n) = Floor[ n*R(n)/{n+R(n)}], where R(n) is the digit reversal of n (A004086).

EXAMPLE

a(17) = Floor[17*71/(17+71)] = Floor[ 1207/88] = 13.

STATUS

proposed

editing