  Recent measurement of a high millisecond pulsar mass (PSR J1614-2230,
1.97+-0.04 Msun) compared with the low mass of PSR J0751+1807 (1.26+-0.14 Msun)
indicates a large span of masses of recycled pulsars and suggests a broad range
of neutron stars masses at birth. We aim at reconstructing the pre-accretion
masses for these pulsars while taking into account interaction of the magnetic
field with a thin accretion disk, magnetic field decay and relativistic 2D
solutions for stellar configurations for a set of equations of state. We
briefly discuss the evolutionary scenarios leading to the formation of these
neutron stars and study the influence of the equation of state.
