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 A049358 #19 May 02 2025 19:23:17 %S A049358 123717,123723,123759,123771,123807,123813,124011,124017,124095, %T A049358 124113,124143,124155,124347,124359,124389,124407,124485,124491, %U A049358 124689,124695,124731,124743,124779,124785,125775,125781,125817,125829,125865,125871,126363,126369 %N A049358 Digitally balanced numbers in base 7: equal numbers of 0's, 1's, ..., 6's. %C A049358 There are 4,320 terms with single numbers of the zero-to-six digits. - _Harvey P. Dale_, May 02 2025 %H A049358 Vincenzo Librandi, <a href="/A049358/b049358.txt">Table of n, a(n) for n = 1..1000</a> %e A049358 123717 is 1023456 in base 7. %t A049358 Select[Range[126000], Length[Union[DigitCount[#, 7]]]==1&] (* _Vincenzo Librandi_, Apr 18 2013 *) %t A049358 FromDigits[IntegerDigits[#],7]&/@Select[FromDigits/@Permutations[Range[0,6]],IntegerLength[#]==7&] (* _Harvey P. Dale_, May 02 2025 *) %Y A049358 Cf. A031443. %Y A049358 Row n = 7 of A378000. %K A049358 nonn,base %O A049358 1,1 %A A049358 _Harvey P. Dale_