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 A342762 #10 Mar 29 2021 15:15:38 %S A342762 1,1,1,1,1,3,5,10,20,42,86,178,362,738,1490,3010,6050,12162,24386, %T A342762 48898,97922,196098,392450,785410,1571330,3143682,6288386 %N A342762 Fold a square sheet of paper alternately vertically to the left and horizontally downwards; after each fold, draw a line along each inward crease; after n folds, the resulting graph has a(n) connected components. %C A342762 A342759 is the main sequence for this entry. %H A342762 Rémy Sigrist, <a href="/A342762/a342762.png">Illustration of initial terms</a> %H A342762 Rémy Sigrist, <a href="/A342762/a342762_1.txt">C# program for A342762</a> %e A342762 See illustration in Links section. %o A342762 (C#) See Links section. %Y A342762 Cf. A342759. %Y A342762 It appears that a(n) = A135094(n-4) + 2 for n >= 5. _Hugo Pfoertner_, Mar 29 2021 %K A342762 nonn,more %O A342762 0,6 %A A342762 _Rémy Sigrist_ and _N. J. A. Sloane_, Mar 21 2021