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 A364850 #18 Apr 11 2024 15:56:32
%S A364850 -1,1,3,1,10,-1,21,1,3,-2,55,-1,78,-3,-4,1,136,-1,171,-2,-6,-5,253,-1,
%T A364850 10,-6,3,-3,406,4,465,1,-10,-8,-12,-1,666,-9,-12,-2,820,6,903,-5,-4,
%U A364850 -11,1081,-1,21,-2,-16,-6,1378,-1,-20,-3,-18,-14,1711,4
%N A364850 a(n) = negated numerator of A014963(n)*A023900(n)/2.
%F A364850 a(n) = - numerator of A014963(n)*A023900(n)/2.
%t A364850 Numerator[Table[- Exp[MangoldtLambda[n]] * Total[MoebiusMu[Divisors[n]]*Divisors[n]]/2, {n, 1, 60}]]
%Y A364850 Cf. A014963, A023900.
%K A364850 frac,sign
%O A364850 1,3
%A A364850 _Mats Granvik_, Aug 10 2023
%E A364850 Definition corrected by _Georg Fischer_, Apr 11 2024