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 A174351 #10 Dec 02 2022 13:38:52 %S A174351 1,1,-1,-1,-1,-1,-1,1,1,1,-1,1,-1,1,-1,-1,-1,-1,1,1,-1,1,-1,-1,-1,1,1, %T A174351 1,-1,-1,1,1,-1,1,-1,1,-1,-1,-1,1,1,-1,-1,-1,-1,-1,-1,1,-1,1,-1,1,1,1, %U A174351 1,-1,-1,-1,1,1,1,-1,-1,1,-1,-1,-1,-1,-1,-1,1,1,1,1,1,-1,1,1,1,-1,-1,-1 %N A174351 a(n) = lambda(Fibonacci(n)). %F A174351 a(n) = A008836(A000045(n)). %e A174351 L(Fibonacci(1))= L(Fibonacci(2))= L(1)= 1. %e A174351 L(Fibonacci(3))= L(2) = -1. %e A174351 L(Fibonacci(12))= L(144)= 1. %p A174351 A174351 := proc(n) %p A174351 A008836(combinat[fibonacci](n)) ; %p A174351 end proc: # _R. J. Mathar_, Jul 08 2012 %o A174351 (PARI) a(n)=(-1)^bigomega(fibonacci(n)) \\ _Charles R Greathouse IV_, Jun 13 2013 %Y A174351 Cf. A000045 A007421, A002819. %K A174351 sign,less %O A174351 1,1 %A A174351 _Michel Lagneau_, Mar 16 2010 %E A174351 Examples edited by _Harvey P. Dale_, Dec 02 2022