A255538 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A255538

Number of connected rigid digital images of n points, up to isomorphism.

%I #12 Apr 08 2015 04:08:59

%S 1,0,0,0,0,0,2,26,544

%N Number of connected rigid digital images of n points, up to isomorphism.

%C Rigid means that the identity map is not homotopic to any other map.

%H P. C. Staecker, <a href="http://arxiv.org/abs/1502.06236">Some enumerations of binary digital images</a>, arXiv:1502.06236 [math.CO], 2015 (see table p. 3).

%Y Cf. A248571, A255537.

%K nonn,hard,more

%O 1,7

%A _P. Christopher Staecker_, Feb 24 2015