n	$E_{n}^{d i a g}$	$E_{n}^{F M}$ (N = 300)	$E_{n}^{F M}$ (N = 500)	$E_{n}^{F M}$ (N = 1000)
0	−2.156866939625	−2.156871437809	−2.156868537378	−2.156868558806
1	−1.513145173222	−1.513127087344	−1.513127087344	−1.513139193491
2	−0.958808621450	−0.958794700980	−0.958794700980	−0.958794700980
3	−0.504841844741	−0.504830341476	−0.504830341476	−0.504830341476
4	−0.170334877363	−0.170345579080	−0.170345579080	−0.170345579080
5	−0.002383210220	−0.002215413790	−0.002247696848	−0.002312262964