A108089 - OEIS

A108089

Number of Abelian Hv-groups of order n.

1, 10, 7926, 8028299905

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

REFERENCES

R. Bayon and N. Lygeros, Les hypergroupes et Hv-groupes d'ordre 3, submitted to Bulletin of the Greek Mathematical Society.

Th. Vougiouklis, The fundamental relation in hyperrings: The general hyperfield, Fourth Int. Congress Algebraic Hyperstructures and Appl. (AHA), 1991, pp. 203-211.

LINKS

Table of n, a(n) for n=1..4.

N. Lygeros, Home Page

CROSSREFS

Sequence in context: A121787 A304437 A358920 * A229152 A125543 A291562

Adjacent sequences: A108086 A108087 A108088 * A108090 A108091 A108092

KEYWORD

hard,nonn

AUTHOR

Roman Bayon (roman.bayon(AT)wanadoo.fr), Jun 05 2005

STATUS

approved