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 A316825 #10 Jan 30 2025 05:08:45 %S A316825 2,1,0,0,1,0,1,0,0,1,0,0,1,0,1,0,0,1,0,1,0,0,1,0,0,1,0,1,0,0,1,0,0,1, %T A316825 0,1,0,0,1,0,1,0,0,1,0,0,1,0,1,0,0,1,0,1,0,0,1,0,0,1,0,1,0,0,1,0,0,1, %U A316825 0,1,0,0,1,0,1,0,0,1,0,0,1,0,1,0,0,1,0,0,1,0,1,0,0,1,0,1,0,0,1 %N A316825 Fibonacci word A003849 with its initial term changed to 2. %C A316825 A word that is pure morphic, but neither uniform morphic, primitive morphic, nor recurrent. %t A316825 Join[{2}, SubstitutionSystem[{0 -> {0, 1}, 1 -> {0}}, {0}, {10}][[1, 2;;]]] (* _Paolo Xausa_, Jan 30 2025 *) %Y A316825 Cf. A003849. %Y A316825 Sequences mentioned in the Allouche et al. "Taxonomy" paper, listed by example number: 1: A003849, 2: A010060, 3: A010056, 4: A020985 and A020987, 5: A191818, 6: A316340 and A273129, 18: A316341, 19: A030302, 20: A063438, 21: A316342, 22: A316343, 23: A003849 minus its first term, 24: A316344, 25: A316345 and A316824, 26: A020985 and A020987, 27: A316825, 28: A159689, 29: A049320, 30: A003849, 31: A316826, 32: A316827, 33: A316828, 34: A316344, 35: A043529, 36: A316829, 37: A010060. %K A316825 nonn %O A316825 0,1 %A A316825 _N. J. A. Sloane_, Jul 14 2018