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 A037410 #18 May 08 2025 19:25:44 %S A037410 1,5,25,26,30,31,125,126,130,131,150,151,155,625,626,630,631,650,651, %T A037410 655,656,750,751,755,756,775,776,780,3125,3126,3130,3131,3150,3151, %U A037410 3155,3156,3250,3251,3255,3256,3275,3276,3280,3281 %N A037410 Positive numbers having the same set of digits in base 2 and base 5. %H A037410 John Cerkan, <a href="/A037410/b037410.txt">Table of n, a(n) for n = 1..10000</a> %t A037410 Select[Range[3500],Union[IntegerDigits[#,2]]==Union[IntegerDigits[#,5]]&] (* _Harvey P. Dale_, May 08 2025 *) %o A037410 (PARI) isok(n) = Set(digits(n, 2)) == Set(digits(n, 5)); \\ _Michel Marcus_, Jan 11 2017 %Y A037410 Subsequence of A033042. %K A037410 nonn,base %O A037410 1,2 %A A037410 _Clark Kimberling_