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 A006606 M0770 #27 Apr 25 2024 11:16:35 %S A006606 1,2,3,6,10,20,36,72,135,272,528,1048,2080,4160,8242,16500,32895, %T A006606 65750,131328,262612,524733,1049600,2098176,4195930,8390620,16781312, %U A006606 33558177,67116876,134225920,268450626,536887270 %N A006606 Nonperiodic autocorrelation functions of length n. %D A006606 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %D A006606 E. G. Whitehead, Jr., Autocorrelation of (+1,-1) sequences, pp. 329-336 of Combinatorial Mathematics (Canberra, 1977), Lect. Notes Math. 686, 1978. [From Jayadev Acharya (jayadev(AT)ucsd.edu), Aug 20 2009] %H A006606 E. G. Whitehead, Jr., <a href="https://doi.org/10.1007/BFb0062549">Autocorrelation of (+1,-1) sequences.</a> [From Jayadev Acharya (jayadev(AT)ucsd.edu), Aug 20 2009] %K A006606 nonn %O A006606 1,2 %A A006606 _N. J. A. Sloane_ %E A006606 More terms from a(16) Jayadev Acharya (jayadev(AT)ucsd.edu), Aug 20 2009 %E A006606 a(22)-a(31) from _Sean A. Irvine_, May 13 2017