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 A062922 #12 Apr 18 2023 09:43:47 %S A062922 0,1,2,3,33,219,840,1055,4220,16880,95322,178500,714000,981540, %T A062922 1387680,7676775,7924262,12418476,12419535,16552116,19188717,44591130, %U A062922 66079524,77842213,178364520,294607851,363167196,610436322,823488858,950204780 %N A062922 Numbers k that, when expressed in base 4 and then interpreted in base 7, give a multiple of k. %e A062922 33 in base 4 is 201, which interpreted in base 7 is 99 = 3*33. %t A062922 Select[Range[0,20*10^6],Divisible[FromDigits[IntegerDigits[#,4],7],#]&] (* _Harvey P. Dale_, Nov 22 2015 *) %K A062922 base,nonn %O A062922 1,3 %A A062922 _Erich Friedman_, Jul 21 2001 %E A062922 More terms from _Naohiro Nomoto_, Aug 06 2001 %E A062922 Offset changed to 1 and a(22)-a(30) from _Georg Fischer_, Mar 13 2023