1,2

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.

C++

Cf. A108089.

Sequence in context: A001328 A051735 A024084 this_sequence A112945 A080295 A084108

Adjacent sequences: A132587 A132588 A132589 this_sequence A132591 A132592 A132593

hard,nonn

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