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 A382280 #7 Mar 25 2025 19:53:07 %S A382280 1,4,6,1,3,3,6,9,4,7,8,7,0,6,7,0,3,4,8,6,8,6,5,6,9,5,1,4,0,4,5,4,2,2, %T A382280 5,5,7,0,6,1,5,9,3,8,4,3,6,6,9,7,0,0,1,0,3,9,2,7,1,7,0,6,8,7,4,6,2,9, %U A382280 5,9,3,2,6,5,2,3,4,7,7,1,1,7,4,8,4,4,5 %N A382280 Area of the Pythagoras Tree. %C A382280 Toby Cathcart Burn computes this area and proves that it is rational, see Burn's link. %C A382280 Periodic with least period 24991809055165165344114049684963169385417186421266758748239197727845219724417438120079735462625442123052. %H A382280 Toby Cathcart Burn, <a href="https://penteract.github.io/pythagTree.html">The Area of the Pythagoras Tree</a> (2022) %e A382280 14.613369478706703486865695140454225570615938436697001039271706874629593265234771.... %o A382280 (PARI) 12823413011547414368862997525616691741041579688920794331363953564934456759066858494476606822552437442098640979/877512406035620068631903180662851572553488753575243048137500508983979170248733422547196905684808937723408093. \\ _Charles R Greathouse IV_, Mar 20 2025 %Y A382280 Related to A276647 and A276677, though growth termination may make their areas differ. %K A382280 nonn,cons,easy %O A382280 2,2 %A A382280 _Charles R Greathouse IV_, Mar 20 2025