# This b-file was computed by Antti Karttunen, 2020-07-26 # 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: # # is_fun_mult_on_n(fun,n) = { my(f=factor(n)); prod(k=1,#f~,fun(f[k,1]^f[k,2]))==fun(n); }; # A051027(n) = sigma(sigma(n)); # A336546(n) = is_fun_mult_on_n(A051027,n); # A065330(n) = (n>>valuation(n, 2)/3^valuation(n, 3)); # A336459(n) = A065330(A051027(n)); # isA336561(n) = (A336546(n)