A "creature" in Palago is a closed shape of a single color across several Palago tiles, perhaps with one or more holes.
A Palago tile is a hexagonal tile with four regions of alternating colors. See links for illustrations.
Creatures are counted up to rotation, reflection, and swapping colors.
Table of n, a(n) for n=1..20.
Cameron Browne, Counting Creatures
Code Golf Stack Exchange, Counting creatures on a hexagonal tiling
Sequence in context: A066324 A143146 A298663 * A185755 A278458 A309705
Adjacent sequences: A325933 A325934 A325935 * A325937 A325938 A325939
Peter Kagey, Sep 09 2019