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 A101432 #17 Oct 04 2020 11:04:02 %S A101432 1,3,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6, %T A101432 4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6, %U A101432 4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4,6,4 %N A101432 Each term is the number of letters in the Spanish name of the previous term. %H A101432 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0,1). %F A101432 a(n) = 5-(-1)^n for n>1, with a(0)=1 and a(1)=3. - _Wesley Ivan Hurt_, Oct 03 2020 %e A101432 Uno tres cuatro seis cuatro seis ... %Y A101432 Cf. A011762 (number of letters). %Y A101432 Cf. A000655 (English), A061504 (French), A328263 (Polish). %K A101432 easy,nonn,word %O A101432 0,2 %A A101432 Kevin Langdon (kevin.langdon(AT)polymath-systems.com), Jan 17 2005; corrected May 24 2005 %E A101432 More terms from Kara A. Houck (kah979(AT)psu.edu), Apr 20 2006