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 A079444 #10 Jan 11 2024 02:51:47 %S A079444 1,3,7,15,33,65,133,267 %N A079444 Number of 3-cycles in range [A014137(2n+2)..A014138(2n+2)] of permutation A057505 (= Donaghey's automorphism M). %H A079444 Antti Karttunen, <a href="/A079442/a079442.pdf">Illustration of initial terms for trees of sizes 3..11</a> %H A079444 Robert Donaghey, <a href="https://doi.org/10.1016/0095-8956(80)90045-3">Automorphisms on Catalan trees and bracketing</a>, J. Combin. Theory, Series B, 29 (1980), 75-90. %F A079444 a(n) = A079442(2n+3)/3. %Y A079444 Cf. A079440, A079442. %K A079444 nonn,more %O A079444 0,2 %A A079444 _Antti Karttunen_, Jan 27 2003