A084282 Number of labeled 6-colorable (i.e., chromatic number <= 6) graphs on n nodes.

1, 2, 8, 64, 1024, 32768, 2097151, 268434467, 68718375600, 35182553667342, 36023832051695607

Offset

1,2

Links

Table of n, a(n) for n=1..11.

F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 8c665c7

Eric Weisstein's World of Mathematics, n-Colorable Graph

Crossrefs

Cf. A047864, A084279, A084280, A084281.

Sequence in context: A153548 A153576 A139681 * A139682 A139683 A139684

Adjacent sequences: A084279 A084280 A084281 * A084283 A084284 A084285

Keyword

nonn,more

Author

Eric W. Weisstein, May 25 2003

Extensions

a(7) from Charles R Greathouse IV, Apr 09 2012

a(8)-a(11) added using tinygraph by Falk Hüffner, Jun 20 2018

Status

approved