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 A353276 #13 Apr 27 2022 17:24:28
%S A353276 1,0,0,-2,0,6,0,-7,-4,2,0,12,0,-2,0,-18,0,3,0,2,-4,-10,0,12,-8,-14,
%T A353276 -18,-8,0,448,0,-41,-12,-22,-8,2,0,-26,-16,-10,0,428,0,-28,-18,-34,0,
%U A353276 -8,-12,-37,-24,-38,0,-38,-16,-32,-28,-46,0,1576,0,-50,-32,-88,-20,388,0,-58,-36,392,0,-27,0,-62,-48,-68,-20,368
%N A353276 a(n) = phi(n) + tau(n)^omega(n) - sigma(n).
%H A353276 Michael De Vlieger, <a href="/A353276/b353276.txt">Table of n, a(n) for n = 1..10000</a>
%F A353276 a(n) = A110088(n) - A051612(n) = A000010(n) + A000005(n)^A001221(n) - A000203(n).
%F A353276 a(p) = 0 for all primes p.
%t A353276 Array[#1 + #3^#2 - #4 & @@ Flatten@ {EulerPhi[#], PrimeNu[#], DivisorSigma[{0, 1}, #]} &, 78] (* _Michael De Vlieger_, Apr 27 2022 *)
%o A353276 (PARI) A353276(n) = (eulerphi(n) + (numdiv(n)^omega(n)) - sigma(n));
%Y A353276 Cf. A000005, A000010, A000203, A001221, A051612, A110088.
%Y A353276 Cf. A110087 (positions of negative terms), A110086 (of terms >= 0), A110085 (of terms > 0).
%K A353276 sign,look
%O A353276 1,4
%A A353276 _Antti Karttunen_, Apr 27 2022