A348620 Total of the chromatic numbers of all simple graphs on n nodes.

1, 3, 8, 26, 94, 476, 3487, 44110, 1042221, 48069505

Offset

1,2

Links

Table of n, a(n) for n=1..10.

Eric Weisstein's World of Mathematics, Chromatic Number

Eric Weisstein's World of Mathematics, Simple Graph

Formula

a(n) = Sum_{k=1..n} k*A084268(n,k). - Andrew Howroyd, Jan 10 2022

Crossrefs

Cf. A084268.

Sequence in context: A124528 A320344 A006870 * A058802 A054097 A238243

Adjacent sequences: A348617 A348618 A348619 * A348621 A348622 A348623

Keyword

nonn,more

Author

Eric W. Weisstein, Oct 25 2021

Status

approved