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 A048811 #15 Dec 19 2015 13:11:10 %S A048811 1,1,2,3,6,9,17,27,47,78,135,224,384,642,1088,1827,3088,5182,8736, %T A048811 14661,24660,41378,69500,116534,195509,327627,549104,919593,1539985, %U A048811 2577399,4313102,7214374,12064930,20169283,33710370,56324729,94089240 %N A048811 Number of rooted trees with n nodes with every leaf at height 6. %H A048811 Alois P. Heinz, <a href="/A048811/b048811.txt">Table of n, a(n) for n = 7..1000</a> %H A048811 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %H A048811 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %F A048811 Euler transform of A048810 shifted right. %Y A048811 Cf. A048808-A048816. %Y A048811 Column k=6 of A244925. %K A048811 nonn %O A048811 7,3 %A A048811 _Christian G. Bower_, Apr 15 1999