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 A119672 #10 Aug 30 2025 06:14:31
%S A119672 0,1,1,1,2,1,2,1,1,2,1,2,1,2,3,3,3,1,2,3,1,2,2,1,2,2,2,2,3,2,1,3,1,1,
%T A119672 2,2,3,2,2,3,2,2,2,2,3,1,4,2,1,2,2,2,2,1,3,2,4,2,1,3,3,2,1,2,2,2,3,1,
%U A119672 1,3,1,2,3,4,3,1,3,1,1,2,1,2,2,2,3,3
%N A119672 Number of prime factors (with multiplicity) of n^4 + 3*n^2 + 1 (A057721).
%F A119672 a(n) = Bigomega(n^4 + 3*n^2 + 1) = A001222(A057721(n)).
%t A119672 Table[PrimeOmega[n^4+3n^2+1],{n,0,100}] (* _Harvey P. Dale_, Apr 25 2011 *)
%Y A119672 Cf. A001222, A057721, A120062.
%K A119672 easy,nonn,changed
%O A119672 0,5
%A A119672 _Jonathan Vos Post_, Jun 11 2006
%E A119672 More terms from _Harvey P. Dale_, Apr 25 2011