login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A061483 Numerator of 1 + 1/2 + 2/3 + 3/4 + ... + (n-1)/n. 0
1, 1, 3, 13, 35, 223, 91, 757, 1759, 18071, 20339, 248929, 274339, 3899047, 4233667, 4570003, 9815681, 178398097, 63323219, 1276654601, 270074449, 94951643, 99889667, 2411272037, 7575891845, 197964062333, 206544557333 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..27.

EXAMPLE

1, 3/2, 13/6, 35/12, 223/60,...

MAPLE

summ := 1; for n from 1 to 30 do printf("%d ", numer(summ)); if (1 = 1) then summ := summ + (n-1)/n: end if; od;

MATHEMATICA

Numerator[Accumulate[Join[{1}, Table[(n-1)/n, {n, 30}]]]] (* Harvey P. Dale, Jan 18 2012 *)

CROSSREFS

Sequence in context: A146725 A146424 A146049 * A340410 A128288 A113115

Adjacent sequences:  A061480 A061481 A061482 * A061484 A061485 A061486

KEYWORD

nonn,frac,easy

AUTHOR

Amarnath Murthy, May 05 2001

EXTENSIONS

Corrected and extended by Winston C. Yang (winston(AT)cs.wisc.edu), May 19 2001

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 14:09 EDT 2021. Contains 348042 sequences. (Running on oeis4.)