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

Author

Eric W. Weisstein, Oct 25 2021

Keywords

• nonn
• more

Links

• Eric Weisstein's World of Mathematics, Chromatic Number
• Eric Weisstein's World of Mathematics, Simple Graph

Crossrefs

Cf. A084268.

Formula

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