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 A036622 #19 Jul 08 2025 21:50:15 %S A036622 1,1,1,2,4,9,19,42,88,188,393,821,1692,3483,7101,14436,29162,58703, %T A036622 117577,234695,466493,924149,1824100,3588957,7038072,13760324, %U A036622 26821365,52130255,101033183,195279030,376427128,723731809,1387917803,2655019934 %N A036622 Number of 6-ary rooted trees with n nodes and height at most 5. %H A036622 Sean A. Irvine, <a href="/A036622/b036622.txt">Table of n, a(n) for n = 0..1554</a> %H A036622 E. M. Rains and N. J. A. Sloane, <a href="https://cs.uwaterloo.ca/journals/JIS/cayley.html">On Cayley's Enumeration of Alkanes (or 4-Valent Trees)</a>, J. Integer Sequences, Vol. 2 (1999), Article 99.1.1. %H A036622 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %K A036622 nonn,fini,full %O A036622 0,4 %A A036622 _N. J. A. Sloane_