A264787 - OEIS

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A264787

Number of colorings of an n X n grid with any number of interchangeable colors under rotational and reflectional symmetry.

1, 1, 7, 2966, 1310397193, 579823814813639193, 477464341236883456112705749206, 1340767144321669800049265230788088027597024910, 21516767919669856366796245458194341840929552797762722429430679631

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,3

REFERENCES

F. Harary and E. Palmer, Graphical Enumeration, Academic Press, 1973.

LINKS

Table of n, a(n) for n=0..8.

Math StackExchange, A 4 x 4 grid of squares.

Marko Riedel, Maple code for Power Group Enumeration.

CROSSREFS

Cf. A182044, A264741, A264742, A264743.

Sequence in context: A235464 A297029 A242851 * A070227 A218141 A172956

Adjacent sequences: A264784 A264785 A264786 * A264788 A264789 A264790

KEYWORD

nonn

AUTHOR

Marko Riedel, Nov 24 2015

STATUS

approved