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 A280972 #11 Jan 14 2017 07:47:32 %S A280972 765,1275,1467,1503,1515,1695,2910,2975,3066,3423,4335,4539,4605,4862, %T A280972 4923,4947,4975,5110,5295,5335,5375,5559,5787,5790,5835,5885,6069, %U A280972 6123,6495,6735,6783,7035,7134,9195,9567,9583,9645,9819,9915,10087,10155,10218,10234,10491,10686,10959,10983,11211 %N A280972 Numbers that appear in both A278909 and A280967 but not in A280971. %C A280972 Binary equivalent of the sequence representing Numbers that appear in both A176670 and A020342 but not A280928 (currently no members are known). %H A280972 Ely Golden, <a href="/A280972/b280972.txt">Table of n, a(n) for n = 1..896</a> %e A280972 765 = A278909(41) = A280967(32) but is not present in A280971. %Y A280972 Cf. A278909, A280967, A280971. %K A280972 nonn,base %O A280972 1,1 %A A280972 _Ely Golden_, Jan 11 2017