1,4

Turning over the necklace is not allowed. Colors may be permuted without changing the necklace structure.

M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.

A002076(n)-A000013(n).

Cf. A056283.

Sequence in context: A080689 A026321 A048221 this_sequence A068000 A093635 A024025

Adjacent sequences: A056293 A056294 A056295 this_sequence A056297 A056298 A056299

nonn

Marks R. Nester (nesterm(AT)dpi.qld.gov.au)