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 A295021 #9 Jun 21 2022 14:19:35 %S A295021 64,216,15625,46656,50653,64000,132651,216000,262144,456533,614125, %T A295021 636056,1601613,1643032,2406104,2515456,3112136,3652264,6331625, %U A295021 10360232,13144256,15625000,41063625,46656000,50653000,52313624,55306341,56623104,64000000,66430125,100544625 %N A295021 Cubes whose largest digit is 6. %C A295021 For any term a(n), all numbers of the form a(n)*10^3k, k >= 0, are in this sequence. We could call "primitive" the terms not of this form, i.e., those without trailing '0'. %F A295021 a(n) = A294996(n)^3. %e A295021 64 is in the sequence because it is a cube, 64 = 4^3, and its largest digit is 6. %t A295021 Select[Range[500]^3,Max[IntegerDigits[#]]==6&] (* _Harvey P. Dale_, Jun 21 2022 *) %o A295021 (PARI) for(n=1,500, vecmax(digits(n^3))==6 &&print1(n^3,",")) %Y A295021 Cf. A294996 (the corresponding cube roots); A278936, A294663, A295025, A295022, A295023, A295024 (same for digit 3 .. 9); A295016 (same for squares). %Y A295021 Cf. A000578 (the cubes). %K A295021 nonn,base %O A295021 1,1 %A A295021 _M. F. Hasler_, Nov 13 2017