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 A308104 #8 May 16 2019 14:27:39 %S A308104 11,22,33,44,55,66,77,88,99,101,112,123,134,145,156,167,178,189,202, %T A308104 213,224,235,246,257,268,279,303,314,325,336,347,358,369,404,415,426, %U A308104 437,448,459,505,516,527,538,549,606,617,628,639,707,718,729,808,819,909,1010 %N A308104 Distinct values taken by the DENEAT operator (A073053) in increasing order. %C A308104 This sequence corresponds to numbers of the form e.o.(e+o) with e, o >= 0 and e+o > 0 (where "." denotes concatenation in decimal). %C A308104 This sequence first differs from A108203 for n = 55: a(55) = 1010 whereas A108203(55) = 1001. %H A308104 Rémy Sigrist, <a href="/A308104/a308104.png">Scatterplot of the first difference of the first 188281 terms (the terms < 100000000)</a> %H A308104 Rémy Sigrist, <a href="/A308104/a308104.gp.txt">PARI program for A308104</a> %o A308104 (PARI) See Links section. %Y A308104 See A308106 for the values in order of appearance. %Y A308104 Cf. A073053, A108203. %K A308104 nonn,base %O A308104 1,1 %A A308104 _Rémy Sigrist_, May 13 2019