# This b-file was computed by Antti Karttunen, 2021-12-05 # in GP/PARI CALCULATOR Version 2.9.4 (released) amd64 running linux (x86-64/GMP-6.1.2 kernel) 64-bit version, compiled: Dec 19 2017, gcc version 7.3.0 (Ubuntu 7.3.0-1ubuntu1), threading engine: pthread # with the following program: # # A050320(n, m=n) = if(1==n, 1, my(s=0); fordiv(n, d, if((d>1)&&(d<=m)&&issquarefree(d), s += A050320(n/d, d))); (s)); # memoA349920 = Map(); # A349920(n) = if(1==n,1,my(v); if(mapisdefined(memoA349920,n,&v), v, v = -sumdiv(n,d,if(d