A084285 Number of connected labeled 5-colorable (i.e., chromatic number <= 5) graphs on n nodes.

1, 1, 4, 38, 728, 26703, 1865842, 251349147, 66151135747, 34319358639795, 35257449916868364

Offset

1,3

Links

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

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

Formula

Logarithmic transform of A084281. - Andrew Howroyd, Dec 02 2018

Crossrefs

Cf. A001832, A084281, A084283, A084284, A084286.

Sequence in context: A171203 A096332 A084284 * A084286 A001187 A093377

Adjacent sequences: A084282 A084283 A084284 * A084286 A084287 A084288

Keyword

nonn,more

Author

Eric W. Weisstein, May 25 2003

Extensions

a(7)-a(11) from Andrew Howroyd, Dec 02 2018

Status

approved