English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We prove that for a positive integer a the integer sequence P(n) satisfyingfor all n, -infty<n<infty, the recurrence P(n)=a+P(n-phi(a)), phi(a) the Eulerfunction, generates in increasing order all integers P(n) coprime to a.Thefinite Fourier expansion of P(n) is given in terms of a, n, and the phi(a)-throots of unity. Properties of the sequence are derived.

The integer recurrence P(n)=a+P(n-phi(a)) I