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 A151510 #11 May 30 2020 04:13:34 %S A151510 1,1,0,1,1,0,1,3,1,0,1,6,7,1,0,1,10,25,15,1,0,1,15,65,90,31,0,0,1,21, %T A151510 140,350,301,56,0,0,1,28,266,1050,1701,938,91,0,0,1,36,462,2646,6951, %U A151510 7686,2737,126,0,0,1,45,750,5880,22827,42315,32725,7455,126,0,0 %N A151510 The triangle in A151338 read by rows upwards. %C A151510 Columns 1-5 are A000012, A000217, A001296, A001297, and A001298. - _Nathaniel Johnston_, Apr 30 2011 %e A151510 Triangle begins: %e A151510 1 %e A151510 1 0 %e A151510 1 1 0 %e A151510 1 3 1 0 %e A151510 1 6 7 1 0 %e A151510 1 10 25 15 1 0 %e A151510 1 15 65 90 31 0 0 %e A151510 1 21 140 350 301 56 0 0 %e A151510 1 28 266 1050 1701 938 91 0 0 %e A151510 ... %K A151510 nonn,tabl,easy %O A151510 0,8 %A A151510 _N. J. A. Sloane_, May 14 2009 %E A151510 Extended by _Nathaniel Johnston_, Apr 30 2011