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 A036616 #19 Jul 08 2025 21:49:35 %S A036616 1,1,1,2,4,9,19,41,86,182,376,776,1579,3205,6442,12899,25651,50793, %T A036616 100016,196121,382719,743834,1439437,2774670,5327167,10189508, %U A036616 19416774,36866735,69748768,131500273,247070451,462647957,863441265,1606169377 %N A036616 Number of 5-ary rooted trees with n nodes and height at most 5. %H A036616 Sean A. Irvine, <a href="/A036616/b036616.txt">Table of n, a(n) for n = 0..780</a> %H A036616 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 A036616 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %K A036616 nonn,fini,full %O A036616 0,4 %A A036616 _N. J. A. Sloane_