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 A062864 #14 Mar 03 2023 13:35:57
%S A062864 0,1,2,34,38,152,346,456,536,705,952,1608,2730,2856,3394,8568,13843,
%T A062864 16642,41529,141059,228772,423177,508560,702000,1269531,5673842,
%U A062864 13499775,20358000,27656606,33557912,40499325,61074000,77463136,100673736,121497975,230590486,232389408
%N A062864 When expressed in base 3 and then interpreted in base 5, is a multiple of the original number.
%e A062864 34 in base 3 is 1021, which interpreted in base 5 is 136 = 4*34.
%t A062864 Join[{0},Select[Range[14*10^6],Divisible[FromDigits[ IntegerDigits[ #,3],5],#]&]] (* _Harvey P. Dale_, Mar 15 2016 *)
%K A062864 base,nonn
%O A062864 1,3
%A A062864 _Erich Friedman_, Jul 21 2001
%E A062864 More terms from _Naohiro Nomoto_, Aug 06 2001
%E A062864 Offset changed to 1 by _Georg Fischer_, Mar 03 2023
%E A062864 More terms from _Amiram Eldar_, Mar 03 2023