login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Chromatic invariant of the n X n knight graph.
1

%I #4 Nov 16 2017 10:40:57

%S 1,4,-1,78,1306725

%N Chromatic invariant of the n X n knight graph.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ChromaticInvariant.html">Chromatic Invariant</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/KnightGraph.html">Knight Graph</a>

%K sign,more

%O 1,2

%A _Eric W. Weisstein_, Nov 16 2017