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 A030196 #13 Jul 19 2024 19:08:18
%S A030196 1,4,11,26,57,66,120,247,302,502,1013,1191,2036,2416,4083,4293,8178,
%T A030196 14608,15619,16369,32752,47840,65519,88234,131054,152637,156190,
%U A030196 262125,455192,478271,524268,1048555,1310354,1479726,2097130,2203488,4194281,4537314,8388584
%N A030196 Distinct elements occurring in triangle of Eulerian numbers (sorted).
%t A030196 Euler[n_,k_] := Sum[(-1)^i Binomial[n+1,i] (k-i)^n, {i,0,k}]; tvals = Flatten[Table[Euler[k,#] &/@ Range[k], {k, 100}]]; Sort[DeleteDuplicates[Select[tvals, # <= 2097130 &]]] (* _Ant King_, Jun 23 2013 *)
%Y A030196 Cf. A008292, A014630.
%K A030196 nonn
%O A030196 1,2
%A A030196 _David W. Wilson_
%E A030196 a(36)-a(39) from _Pontus von Brömssen_, Jul 19 2024