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 A050943 #14 Apr 29 2022 03:48:04
%S A050943 4,9,10,16,19,20,25,31,34,35,36,46,49,52,55,56,64,74,80,81,83,84,85,
%T A050943 100,109,110,116,119,120,121,130,136,144,145,155,161,164,165,166,169,
%U A050943 185,196,199,200,202,210,216,219,220,225,230,235,244,251
%N A050943 The sum of 2 or more consecutive nonzero triangular numbers.
%H A050943 Vincenzo Librandi, <a href="/A050943/b050943.txt">Table of n, a(n) for n = 0..7350</a> (missing terms inserted by _Sean A. Irvine_, Apr 28 2022)
%t A050943 nn=20;With[{trnos=Accumulate[Range[nn]]},Union[Flatten[Table[ Total/@ Partition[ trnos,n,1],{n,2,nn}]]]] (* _Harvey P. Dale_, Jul 25 2014 *)
%Y A050943 Cf. A050942.
%K A050943 nonn
%O A050943 0,1
%A A050943 _N. J. A. Sloane_, Jan 02 2000