This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A066287 #16 Sep 10 2024 20:50:20 %S A066287 0,1,1,2,2,1,1,2,4,2,5,7,8,5,10,17,20,12,23,42,48,30,59,108 %N A066287 Number of 3-dimensional polyominoes (or polycubes) with n cells and rotational symmetry group of order exactly 8. %C A066287 The entry a(14)=2 does not match the examples in A000162, which propose a(14)=5. - _R. J. Mathar_, Sep 03 2024 %C A066287 The sequence counts "one-sided" polycubes (A000162); chiral polycubes count twice. - _John Mason_, Sep 04 2024 %D A066287 W. F. Lunnon, Symmetry of cubical and general polyominoes, pp. 101-108 of R. C. Read, editor, Graph Theory and Computing. Academic Press, NY, 1972. %F A066287 a(n) = 2*AB(n)+BBC(n), see Lunnon paper for naming convention. - _John Mason_, Sep 04 2024 %Y A066287 See A000162, A066273, A066281, A066283, A066288, A066453, A066454. %K A066287 nonn %O A066287 1,4 %A A066287 Brendan Owen (brendan_owen(AT)yahoo.com), Jan 01 2002 %E A066287 a(14) corrected (after comment from _R. J. Mathar_), a(15)-a(24) added, and name clarified by _John Mason_, Sep 04 2024