[seqfan] Re: A327135 vs A026317, sines and cosines at integer arguments

[jean-paul allouche]

Hi

Is it not true that sin^2(n+1) - cos^2(n) and sin(2n+2) - sin(2n) are
both linear combinations of sin(2n) and cos(2n) that are proportional
(with a multiplicative coefficient only depending on cos(1) and sin(1))?
Hmm I have to double check my computation ,but I will be back only in
a hour or two

best
jp

Le 13/11/2019 à 10:13, Richard J. Mathar a écrit :
> A327135 and A026317 consider sign changes of the sine and cosine
> sampled at integer arguments. Is there some proof that they
> are essentially (up to offset) the same?
>
> RJM
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/