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 A076348 #5 Mar 30 2012 18:50:26 %S A076348 0,0,-1,1,-2,-1,2,-1,1,-2,0,1,-1,-12,-2,-1,2,1,0,-1,-16,2,4,1,-2,-8,1, %T A076348 -24,-1,-2,-1,-12,1,8,-24,2,-1,1,-2,16,-32,-1,-28,8,-1,1,2,-20,-16,-1, %U A076348 2,-1,20,-2,-24,1,-4,-36,-2,16,1,1,-24,-1,-17,2,-1,1,16,-32,1,-48,20,-2,-8 %N A076348 A076341(A005117(n)), imaginary part of squarefree numbers mapped as defined in A076340, A076341. %e A076348 Applying the map as defined in A076340, A076341: %e A076348 A005117(40)=65=5*13=(4+1)*(12+1) -> (4,1)*(12,1) = (4*12-1,12+4) = (47,16), therefore a(40)=16 and A076347(40)=47. %Y A076348 Real part = A076347, A070750, A076344, A076350, A076352. %K A076348 sign %O A076348 1,5 %A A076348 _Reinhard Zumkeller_, Oct 08 2002