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 A061826 #10 Feb 28 2023 05:59:18 %S A061826 0,28,42,84,224,266,280,406,420,448,462,602,644,686,826,840,868,882, %T A061826 2002,2044,2086,2226,2240,2268,2282,2408,2422,2464,2604,2646,2660, %U A061826 2688,2800,2828,2842,2884,4004,4046,4060,4088,4200,4228,4242,4284,4424,4466,4480 %N A061826 Multiples of 7 containing only even digits. %H A061826 <a href="/index/Ar#10-automatic">Index entries for 10-automatic sequences</a>. %e A061826 84 = 7*12 is a term. %t A061826 Select[7*Range[700],AllTrue[IntegerDigits[#],EvenQ]&] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jan 04 2017 *) %o A061826 (PARI) is(n)=n%7==0 && #setintersect(Set(digits(n)), [1,3,5,7,9])==0 \\ _Charles R Greathouse IV_, Feb 15 2017 %Y A061826 Cf. A061825. %K A061826 nonn,base,easy %O A061826 1,2 %A A061826 _Amarnath Murthy_, May 28 2001 %E A061826 More terms from Larry Reeves (larryr(AT)acm.org), May 30 2001 %E A061826 a(1)=0 added by _Georg Fischer_, Feb 28 2023