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 A379061 #20 Mar 14 2025 09:34:26 %S A379061 1,1,-4,1,4,1,1,-9,1,9,1,1,-16,1,1,1,-4,-1,-1,-1,25,-4,1,1,1,-25,-1, %T A379061 -1,-1,-1,-1,36,-4,1,1,1,-36,-1,-1,-1,-1,-1,49,-4,-1,-1,4,-1,4,1,1,-4, %U A379061 -49,-1,-1,-1,-1,-1,-1,-1,64,-1,-1,-1,4,1,1,1,1,1,1,1,1,-81,4,1,1,1,-4,-1,-1,81,1,1,1,1,1,1,1,1,-100,9,-1,-1,-1,-1,-1,-1,-1,-1,100 %N A379061 First differences of A377091. %H A379061 N. J. A. Sloane, <a href="/A379061/b379061.txt">Table of n, a(n) for n = 0..19999</a> %F A379061 lim sup a(n)/n = - lim inf a(n)/n = 1. (Conjectured.) - _M. F. Hasler_, Feb 08 2025 %t A379061 (* A377091list is defined at A377091 *) %t A379061 Differences[A377091list[100]] (* _Paolo Xausa_, Jan 20 2025 *) %o A379061 (PARI) A379061_upto(N=99, A=A377091_upto(N))=A[^1]-A[^-1] \\ _M. F. Hasler_, Feb 08 2025 %o A379061 (Python) A379061 = lambda n: A377091(n+1)-A377091(n) # _M. F. Hasler_, Feb 08 2025 %Y A379061 Cf. A377091, A379062. %K A379061 sign %O A379061 0,3 %A A379061 _N. J. A. Sloane_, Dec 27 2024