# eval: sumnum($n,1,[2,log(2)], sub{2**(-$n)},intnumstep()+1,1)-1

not ok 46 # in='sumnum($n,1,[2,log(2)], sub{2**(-$n)},intnumstep()+1,1)-1', err='PARI:   ***   the PARI stack overflows !
        current stack size: 20000000 (19.073 Mbytes)
  [hint] you can increase GP stack with allocatemem()
'