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A222189 Number of toroidal n X 3 binary arrays, allowing rotation and/or reflection of the rows and/or the columns. 1
4, 13, 36, 158, 708, 4236, 26412, 180070, 1256914, 8999762, 65225244, 477772294, 3525803320, 26185264801, 195490126328, 1466095545930, 11038514989344, 83401050695432, 632087998742988, 4803854169636124, 36600736833265244, 279496328812771427 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..22.

S. N. Ethier, Counting toroidal binary arrays, arXiv preprint arXiv:1301.2352, 2013 and J. Int. Seq. 16 (2013) #13.4.7.

CROSSREFS

A column of A222188.

Sequence in context: A065297 A067635 A222425 * A003727 A103082 A279111

Adjacent sequences:  A222186 A222187 A222188 * A222190 A222191 A222192

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 12 2013

EXTENSIONS

More terms from Michel Marcus, Feb 13 2013

STATUS

approved

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Last modified April 19 10:56 EDT 2019. Contains 322258 sequences. (Running on oeis4.)