login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A231606 Maximal possible numerator for a sum of the form 1 +/- 1/2 +/- 1/3 +/- ... +/- 1/n. 0
1, 3, 11, 25, 137, 127, 949, 2003, 7129, 7381, 83711, 86021, 1145993, 1171733, 1195757, 2436559, 42142223, 41461543, 800021557, 788381929, 799467289, 810048769, 18863914247, 19087007117, 99182995801, 100212655201, 312536252003, 315404588903 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..28.

MATHEMATICA

nMax = 19; d = {0}; Table[d = Flatten[{d + 1/n, d - 1/n}]; Max[Abs[Numerator[d]]], {n, nMax}]

CROSSREFS

Cf. A003418 (maximal denominator).

Cf. A061195 (minimal numerator), A232090 (minimal denominator).

Sequence in context: A111935 A175441 A001008 * A096617 A025529 A124078

Adjacent sequences:  A231603 A231604 A231605 * A231607 A231608 A231609

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 19 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 23 13:38 EST 2018. Contains 299581 sequences. (Running on oeis4.)