A132591 Number of hyperrings of order n.

1, 63, 33277642

Offset

1,2

References

R. Bayon and N. Lygeros, The Hyperrings of Order 3.

Th. Vougiouklis, Hyperstructures and their Representations. Hadronic Press, (1994).

Th. Vougiouklis, The fundamental relation in hyperrings, the general hyperfield. Fourth INT. Congress on AHA (1990), pp. 203-211.

Links

Table of n, a(n) for n=1..3.

R. Bayon, N. Lygeros, The hyperrings of order 3, JIS 11 (2008) 08.3.2

Crossrefs

Cf. A108089, A132590.

Sequence in context: A229933 A230175 A263164 * A116232 A094496 A010112

Adjacent sequences: A132588 A132589 A132590 * A132592 A132593 A132594

Keyword

hard,nonn,bref

Author

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

Status

approved