# This b-file was computed by Antti Karttunen, 2022-06-05 # 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: # # A002110(n) = prod(i=1,n,prime(i)); # A108951(n) = { my(f=factor(n)); prod(i=1, #f~, A002110(primepi(f[i, 1]))^f[i, 2]) }; \\ From A108951 # memoA354351 = Map(); # A354351(n) = if(1==n,1,my(v); if(mapisdefined(memoA354351,n,&v), v, v = -sumdiv(n,d,if(d