A061484 Numerator of 1/3 + 3/5 + 5/7 + ... + (2n - 1)/(2n + 1).

0, 1, 14, 173, 764, 11239, 184222, 223261, 4471112, 97969133, 111132998, 2861599189, 15847336748, 52189778369, 1649032491226, 55341482060581, 59580601511056, 63835349051671, 2519849300889202, 2678253518766877

Offset

0,3

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Example

1/3, 14/15, 173/105, 764/315,...

Maple

summ := 0; for n from 1 to 30 do printf("%d ", numer(summ)); if (1 = 1) then summ := summ + (2*n-1)/(2*n+1): end if; od;

Mathematica

Join[{0}, Accumulate[Table[(2n-1)/(2n+1), {n, 30}]]//Numerator] (* Harvey P. Dale, Jan 03 2023 *)

Crossrefs

Sequence in context: A191690 A016136 A277940 * A097583 A269680 A269469

Adjacent sequences: A061481 A061482 A061483 * A061485 A061486 A061487

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

Fourth example term corrected by Charles J. Daniels (chajadan(AT)gmail.com), Dec 02 2009

Status

approved