[seqfan] Re: Reciprocal Recaman

Neil Sloane njasloane at gmail.com
Tue Nov 19 03:43:18 CET 2013


Interesting! Can you please add the sequences
of numerators and denominators to the OEIS?

(Use A226260 / A226261 for example as a template.
In fact there are hundreds of such examples.)

Please also add this to the Index to Fractions on the wiki - or I can
do that if you tell me the A-numbers.
Thanks!
Neil


On Mon, Nov 18, 2013 at 8:33 PM, David Wilson <davidwwilson at comcast.net>wrote:

> The smallest nonnegative values in
>
> S(n) = { +- 1/1 +- 1/2 +- 1/3 +- ... +- 1/n }
>
> for n <= 40 are
>
> 0 0/1
> 1 1/1
> 2 1/2
> 3 1/6
> 4 1/12
> 5 7/60
> 6 1/20
> 7 11/420
> 8 13/840
> 9 11/2520
> 10 11/2520
> 11 23/27720
> 12 23/27720
> 13 607/360360
> 14 251/360360
> 15 251/360360
> 16 25/144144
> 17 97/12252240
> 18 97/12252240
> 19 3767/232792560
> 20 3767/232792560
> 21 3767/232792560
> 22 457/46558512
> 23 24319/5354228880
> 24 24319/5354228880
> 25 7951/2974571600
> 26 4261/26771144400
> 27 13703/80313433200
> 28 13703/80313433200
> 29 872843/2329089562800
> 30 872843/2329089562800
> 31 17424097/72201776446800
> 32 13828799/144403552893600
> 33 902339/144403552893600
> 34 7850449/144403552893600
> 35 7850449/144403552893600
> 36 7850449/144403552893600
> 37 1526171/763275922437600
> 38 68185267/5342931457063200
> 39 3429883/485721041551200
> 40 3429883/485721041551200
>
>
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-- 
Dear Friends, I have now retired from AT&T. New coordinates:

Neil J. A. Sloane, President, OEIS Foundation
11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com



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