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 A121025 #21 Feb 25 2024 17:33:25 %S A121025 5,15,25,35,45,50,55,65,75,85,95,105,115,125,135,145,150,155,165,175, %T A121025 185,195,205,215,225,235,245,250,255,265,275,285,295,305,315,325,335, %U A121025 345,350,355,365,375,385,395,405,415,425,435,445,450,455,465,475,485 %N A121025 Multiples of 5 containing a 5 in their decimal representation. %H A121025 Paolo Xausa, <a href="/A121025/b121025.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..5000 from Muniru A Asiru) %H A121025 <a href="/index/Ar#10-automatic">Index entries for 10-automatic sequences</a>. %F A121025 a(n) ~ 5n. - _Charles R Greathouse IV_, Feb 12 2017 %t A121025 Select[5*Range[200], MemberQ[IntegerDigits[#], 5] &] (* _Paolo Xausa_, Feb 25 2024 *) %o A121025 (PARI) is(n)=n%5==0 && setsearch(Set(digits(n)), 5) \\ _Charles R Greathouse IV_, Feb 12 2017 %o A121025 (GAP) Filtered([1..500],n-> n mod 5 = 0 and 5 in ListOfDigits(n)); # _Muniru A Asiru_, Feb 23 2019 %Y A121025 Intersection of A008587 and A011535. %Y A121025 Cf. A121041, A011531, A121022, A121023, A121024, A121026, A121027, A121028, A121029, A121030, A121031, A121032, A121033, A121034, A121035, A121036, A121037, A121038, A121039, A121040. %K A121025 nonn,base,easy %O A121025 1,1 %A A121025 _Reinhard Zumkeller_, Jul 21 2006 %E A121025 Typo in comment fixed by _Reinhard Zumkeller_, May 01 2011