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 A008686 #30 Jan 24 2025 14:37:49
%S A008686 1,8,15,22,29,5,12,19,26,5,12,19,26,2,9,16,23,30,7,14,21,28,4,11,18,
%T A008686 25,2,9,16,23,30,6,13,20,27,3,10,17,24,1,8,15,22,29,5,12,19,26,3,10,
%U A008686 17,24,31
%N A008686 Day-of-month at weekly intervals from Jan 01 of a non-leap year (a finite sequence with 53 terms).
%H A008686 <a href="/index/Ca#calendar">Index entries for sequences related to calendars</a>
%t A008686 #[[3]]&/@DateRange[{2021,1,1},{2021,12,31},7] (* _Harvey P. Dale_, Jan 24 2025 *)
%Y A008686 Cf. A003786 (the same for a leap year).
%K A008686 nonn,fini,full
%O A008686 1,2
%A A008686 _N. J. A. Sloane_
%E A008686 Edited by _N. J. A. Sloane_, Jul 26 2023