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 A381841 #11 Mar 09 2025 12:51:57 %S A381841 3,9,12,16,22,28,31,37,40,44,50,53,57,63,69,72,76,82,88,91,97,100,104, %T A381841 110,116,119,125,128,132,138,141,145,151,157,160,166,169,173,179,182, %U A381841 186,192,198,201,205,211,217,220,226,229,233,239,242,246,252,258 %N A381841 Position of the n-th occurrence of the digit 3 in A105083(n-1) for n>=1. %H A381841 Jeffrey Shallit, <a href="https://arxiv.org/abs/2503.01026">The Narayana Morphism and Related Words</a>, arXiv:2503.01026 [math.CO], 2025. %F A381841 a(n) = A064105(n) + 1. %F A381841 a(n) = A136495(n) + A136496(n). %Y A381841 Cf. A064105, A105083, A136495, A136496, A202342. %K A381841 nonn %O A381841 1,1 %A A381841 _Jeffrey Shallit_, Mar 08 2025