OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..2000
FORMULA
a(n) = numerator of (2*n+1)/((n^2+1)*((n+1)^2+1)). - G. C. Greubel, Oct 14 2024
MATHEMATICA
Numerator[Abs[Differences[1/(Range[0, 60]^2+1)]]] (* Harvey P. Dale, May 01 2013 *)
PROG
(Magma)
A033465:= func< n | Numerator((2*n+1)/((n^2+1)*((n+1)^2+1))) >;
[A033465(n): n in [0..70]]; // G. C. Greubel, Oct 14 2024
(SageMath)
def A033465(n): return numerator((2*n+1)/((n^2+1)*((n+1)^2+1)))
[A033465(n) for n in range(71)] # G. C. Greubel, Oct 14 2024
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
STATUS
approved