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 A354937 #9 Jun 17 2022 14:52:24
%S A354937 4,5,8,11,15,19,22,25,29,32,39,43,47,50,53,57,61,64,67,71,78,81,89,92,
%T A354937 95,99,103,106,109,113,127,131,134,137,141,151,155,162,169,173,176,
%U A354937 179,183,190,193,197,211,218,229,232,239,243,256,257,263,267,271,274,277,281,291,295,302,309,313,316,323,337,344
%N A354937 Row 7 of A354940: Numbers k for which A345992(k) = 7, divided by 7.
%C A354937 Apparently, all terms are either of the form 7k+1 (in A016993), 7k+4 (A017029) or 7k+5 (A017041).
%t A354937 q[n_] := Module[{m = 1}, While[!Divisible[m*(m + 1), 7*n], m++]; GCD[7*n, m] == 7]; Select[Range[345], q] (* _Amiram Eldar_, Jun 17 2022 *)
%o A354937 (PARI) A354937(n) = A354940sq(7,n);
%Y A354937 Row 7 of A354940.
%Y A354937 Cf. A016993, A017029, A017041, A344005, A345992.
%K A354937 nonn
%O A354937 1,1
%A A354937 _Antti Karttunen_, Jun 15 2022