cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A381320 Number of minimum vertex colorings in the n-Hanoi graph.

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%I A381320 #17 Feb 21 2025 11:48:58
%S A381320 6,66,85200,183250434809856,
%T A381320 1823313150135576711941779566275453880631296,
%U A381320 1796015231442383417566549899388909415521140128662444489798112174969514654167314109511319978572879992886003172220405085684891648
%N A381320 Number of minimum vertex colorings in the n-Hanoi graph.
%H A381320 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MinimumVertexColoring.html">Minimum Vertex Coloring</a>.
%H A381320 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HanoiGraph.html">Hanoi Graph</a>.
%F A381320 a(n) = P_n(3), where P_n is the chromatic polynomial given by A193233 or A288839.
%Y A381320 Cf. A193233 (coefficients of chromatic polynomial).
%Y A381320 Cf. A288839 (coefficients of chromatic polynomial, highest powers first).
%K A381320 nonn
%O A381320 1,1
%A A381320 _Eric W. Weisstein_, Feb 21 2025