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A255538
Number of connected rigid digital images of n points, up to isomorphism.
0
1, 0, 0, 0, 0, 0, 2, 26, 544
OFFSET
1,7
COMMENTS
Rigid means that the identity map is not homotopic to any other map.
LINKS
P. C. Staecker, Some enumerations of binary digital images, arXiv:1502.06236 [math.CO], 2015 (see table p. 3).
CROSSREFS
Sequence in context: A364196 A216254 A177316 * A302719 A090247 A371296
KEYWORD
nonn,hard,more
AUTHOR
STATUS
approved