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 A326789 #17 Sep 16 2019 04:29:38 %S A326789 0,0,0,3,24,124,588,2484,10240,40464,158220,608951,2333520,8894616, %T A326789 33864340,128791140,490027200,1865614976,7110959340,27138170397, %U A326789 103717719412,396965536224,1521562700988,5840509149020,22450188684264,86412086034120,333035003533660 %N A326789 Number of n-bead asymmetric bracelets with exactly 4 different colored beads. %C A326789 Asymmetric bracelets are those primitive (period n) bracelets that when turned over are different from themselves. %H A326789 Andrew Howroyd, <a href="/A326789/b326789.txt">Table of n, a(n) for n = 1..200</a> %F A326789 a(n) = A032241(n) - 4*A032240(n) + 6*A032239(n) for n >= 3. %F A326789 Moebius transform of A305543. %Y A326789 Column k=4 of A309651. %Y A326789 Cf. A032239, A032240, A032241, A056344, A056350, A305543, A326660. %K A326789 nonn %O A326789 1,4 %A A326789 _Andrew Howroyd_, Sep 12 2019