A037221 Number of near-rings (or nearrings) definable on cyclic group of order n.

3, 5, 12, 10, 60, 24, 135, 222, 329, 139, 1749, 454, 2716, 3817

Offset

2,1

Links

Table of n, a(n) for n=2..15.

W. E. Clark and J. Pedersen, Catalogue of Algebraic Systems

C. Noebauer, Home page [Archived copy as of 2008 from web.archive.org]

C. Noebauer, The Numbers of Small Rings

C. Noebauer, Thesis on the enumeration of near-rings

Crossrefs

Cf. A027623, A037291.

Sequence in context: A286900 A361111 A361322 * A182537 A259309 A212061

Adjacent sequences: A037218 A037219 A037220 * A037222 A037223 A037224

Keyword

nonn,nice

Author

N. J. A. Sloane

Extensions

Corrected by Christof Noebauer (christof.noebauer(AT)algebra.uni-linz.ac.at), Sep 29 2000

Status

approved