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 A327918 #6 Oct 18 2019 04:12:21 %S A327918 23,211,223,37,311,313,317,331,53,523,73,719,113,1117,1123,1129 %N A327918 The 16 pure prime dates of each non-leap year of the form concatenate(month,day) with month and day also prime numbers. %C A327918 For the numbers for leap years see A327919. %C A327918 Only the months February (2), March (3), May (5), July (7) and November (11) qualify. The qualifying prime days are for month m=2: 3, 5, 7, 11, 13, 17, 19, 23; for month m = 11: 3, 5, 7, 11, 13, 17, 19, 23, 29 and for months m = 3, 5, and 7: 3, 5, 7, 11, 13, 17, 19, 23, 29, 31. %C A327918 The months m = 2, 3, 5, 7, 11 contribute 3, 5, 2, 2, 4 days, respectively, adding to 16. %Y A327918 Cf. A165243 (first three terms), A165292 (first five terms), A165555 (first two terms), A167187 (first two terms), A327348 (m and d nonprime allowed), A327914 (with 0 before d = 1..9), A327919 (leap year), A327920 (pure prime dates of d.m form). %K A327918 nonn,easy,fini,full %O A327918 1,1 %A A327918 _Wolfdieter Lang_, Oct 08 2019