# This b-file was computed by Antti Karttunen, 2019-04-22 # 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: # # up_to = 20000; # isA191218(n) = ((n%2)&&2==(sigma(n)%4)); # A191218list(up_to) = { my(v=vector(up_to), k=0, n=0); while(k