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 A048814 #15 Dec 19 2015 13:10:46 %S A048814 1,1,2,3,6,9,17,28,49,83,144,244,422,719,1234,2109,3615,6173,10565, %T A048814 18042,30839,52653,89927,153462,261931,446818,762190,1299678,2215990, %U A048814 3777230,6437673,10969447,18688879,31834676,54220089,92331502 %N A048814 Number of rooted trees with n nodes with every leaf at height 9. %H A048814 Alois P. Heinz, <a href="/A048814/b048814.txt">Table of n, a(n) for n = 10..1000</a> %H A048814 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %H A048814 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %F A048814 Euler transform of A048813 shifted right. %Y A048814 Cf. A048808-A048816. %Y A048814 Column k=9 of A244925. %K A048814 nonn %O A048814 10,3 %A A048814 _Christian G. Bower_, Apr 15 1999