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 A294663 #10 Nov 16 2017 02:31:17 %S A294663 343,314432,343000,34012224,314432000,343000000,34012224000, %T A294663 314432000000,343000000000,442102433032,30304210142233,34012224000000, %U A294663 143121324002112,314432000000000,333014302331144,343000000000000,442102433032000,30304210142233000,34012224000000000 %N A294663 Cubes whose largest digit is 4. %C A294663 For any term a(n), all numbers of the form a(n)*10^3k, k >= 0, are in this sequence. Primitive terms, i.e., not of this form (or equivalently: without trailing '0'), are 343, 314432, 34012224, 442102433032, 30304210142233, 143121324002112, 333014302331144, ... %F A294663 a(n) = A294664(n)^3. %e A294663 343 is in the sequence because it is a cube, 343 = 7^3, and its largest digit is 4. %o A294663 (PARI) for(n=1,2e8, vecmax(digits(n^3))==4&&print1(n^3,",")) %Y A294663 Cf. A294664 (the corresponding cubic roots). %Y A294663 Cf. A277948 = A277961^2 (analog for squares). %Y A294663 Cf. A278936, A295025, A295021, ..., A295024 (analog for digits 3, 5, 6, ..., 9). %Y A294663 Cf. A000578 (the cubes). %K A294663 nonn,base %O A294663 1,1 %A A294663 _M. F. Hasler_, Nov 12 2017