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 A152845 #6 May 03 2017 23:51:47
%S A152845 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,2,1,1,2,1,1,2,1,1,
%T A152845 2,1,1,2,1,1,2,1,1,3,3,1,1,3,3,1,1,3,3,1,1,3,3,1,1,3,3,1,1,3,3,1,1,3,
%U A152845 3,1,1,4,6,4,1,1,4,6,4,1,1,4,6,4,1,1,4,6,4,1,1,4,6,4,1,1,4,6,4,1,1,4,6,4,1
%N A152845 Triangle read by rows, A007318 rows repeated seven times .
%C A152845 Diagonal sums : A103375 .
%H A152845 G. C. Greubel, <a href="/A152845/b152845.txt">Table of n, a(n) for the first 50 rows, flattened</a>
%e A152845 Triangle begins : 1 ; 1 ; 1 ; 1 ; 1 ; 1 ; 1 ; 1,1 ; 1,1 ; 1,1 ; 1,1 ; 1,1 ; 1,1 ; 1,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,2,1 ; 1,3,3,1 ; ...
%t A152845 Flatten[Table[#, {7}] & /@ Table[Binomial[n, k], {n, 0, 10}, {k, 0, n}]] (* _G. C. Greubel_, May 03 2017 *)
%Y A152845 Cf. A007318, A152198, A152815, A152828, A152830, A152831, A152844
%K A152845 easy,nonn,tabf
%O A152845 0,23
%A A152845 _Philippe Deléham_, Dec 14 2008