# This b-file was computed by Antti Karttunen, 2022-07-28 # 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: # # v355944 = readvec("b355944_to.txt"); \\ Prepared with gawk ' { print $2 } ' < b355944.txt > b355944_to.txt # A355944(n) = v355944[n]; # A356153(n) = { my(u=A355944(n)); (u/gcd(n, u)); }; # memoA356154 = Map(); # A356154(n) = if(1==n,1,my(v); if(mapisdefined(memoA356154,n,&v), v, v = -sumdiv(n,d,if(d