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 A151824 #4 Dec 04 2013 14:01:56
%S A151824 1,1,0,1,0,1,1,0,1,2,1,0,1,5,4,1,0,0,6,14,5,1,0,0,9,52,32,7,1,0,0,2,
%T A151824 156,212,60,9,1,0,0,1,624,1753,639,103,11,1,0,0,0,3184,25018,10500,
%U A151824 1578,163,13,1,0,0,0,12323,834256,380722,43013,3488,249,16,1
%N A151824 Triangle read by rows: peak-to-average-power ratios of vectors of length n under local complementation.
%H A151824 Lars Eirik Danielsen and Matthew G. Parker, <a href="http://arxiv.org/abs/cs/0504102">Spectral Orbits and Peak-to-Average Power Ratio of Boolean Functions with respect to the {I,H,N}^n Transform</a>, (2005), arxiv:cs/0504102. In Sequences and Their Applications-SETA 2004, Lecture Notes in Computer Science, Volume 3486/2005, Springer-Verlag.
%e A151824 Triangle begins:
%e A151824 . 1
%e A151824 . 1
%e A151824 . 0 1
%e A151824 . 0 1 1
%e A151824 . 0 1 2 1
%e A151824 . 0 1 5 4 1
%e A151824 . 0 0 6 14 5 1
%e A151824 . 0 0 9 52 32 7 1
%e A151824 . 0 0 2 156 212 60 9 1
%e A151824 . 0 0 1 624 1753 639 103 11 1
%e A151824 . 0 0 0 3184 25018 10500 1578 163 13 1
%e A151824 . 0 0 0 12323 834256 380722 43013 3488 249 16 1
%K A151824 nonn,tabf
%O A151824 0,10
%A A151824 _N. J. A. Sloane_, Jul 12 2009