Chapter III article 22 of The Constitution of Seychelles (1976) covers freedom of association along with freedom of assembly. Seychelles gained independence from the United Kingdom in the same year of 1976. The constitution was redrafted in 1993, now covering the freedom of association under Article 23 of Chapter III.

CIA World Factbook. Seychelles. https://www.cia.gov/the-world-factbook/countries/seychelles/#government

Seychelles Independence Order 1976. Constitution of Seychelles 1976. http://citizenshiprightsafrica.org/wp-content/uploads/2020/02/Seychelles-Independence-Constitution-1976.pdf

Constitute Project. Constitution of Seychelles 1993. https://www.constituteproject.org/constitution/Seychelles_2017