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A295194
Chromatic invariant on the n-triangular honeycomb obtuse knight graph.
0
1, -3, 6, 0, 0, 11687, 100231463
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Chromatic Invariant
CROSSREFS
Sequence in context: A154924 A071105 A218113 * A104613 A113565 A178567
KEYWORD
sign,more
AUTHOR
Eric W. Weisstein, Nov 16 2017
STATUS
approved