A214327 Number of nontrivial (triangle-free and girth >=5) stable snarks on 2n nodes.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 7, 25, 228, 1456

Offset

1,11

Links

Table of n, a(n) for n=1..16.

J. Hagglund and K. Markstrom, On stable cycles and cycle double covers of graphs with large circumference, Discrete Math., 312 (2012), 2540-2544.

Eric Weisstein's World of Mathematics, Snark

Crossrefs

Cf. A130315.

Sequence in context: A009281 A141516 A235378 * A320519 A183272 A138346

Adjacent sequences: A214324 A214325 A214326 * A214328 A214329 A214330

Keyword

nonn,more

Author

N. J. A. Sloane, Jul 26 2012

Status

approved