A132590 Number of Abelian hypergroups of order n.

1, 6, 466, 10614362

Offset: 1

Author

Roman Bayon (roman.bayon(AT)gmail.com), Aug 28 2007

Keywords

• hard
• nonn

References

• R. Bayon and N. Lygeros, Les hypergroupes d'ordre 3, Italian Journal of Pure and Applied Mathematics, Vol. 20 (2006), pp. 223-236.
• R. Bayon and N. Lygeros, Les hypergroupes abeliens d'ordre 4, Structure elements of hyper-structures, Spanidis, Xanthi (2006),pp. 35-39.

Links

• R. Bayon, N. Lygeros, The hyperrings of order 3, JIS 11 (2008) 08.3.2.
• Mahdeyeh Iranmanesh, Morteza Jafarpour, Hossien Aghabozorgi, Jian Ming Zhan, Classification of Krasner Hyperfields of Order 4, Acta Mathematica Sinica, English Series (2020) Vol. 36, No. 8, 889-902.

Crossrefs

Cf. A108089.