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Energy differences between frozen core and all electrons correlated.
MP2, MP3, MP4, B2PLYP, CCSD, and CCSD(T)

For VO (Vanadium monoxide)

Energies in Hartree
Methods with standard basis sets
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.063577 -0.116791 -0.116791 -0.124197 -0.188646 -0.188646 -0.211167 -0.430609 -0.430610 -0.255394 -0.224308 -0.196735 -0.355693 -0.448627 -0.212843 -0.361662 -0.454531
MP3=FULL         -0.189897   -0.208550       -0.217324 -0.195673 -0.346376        
MP4=FULL   -0.126638     -0.199458       -0.443457     -0.207962 -0.374966   -0.224816 -0.381058  
B2PLYP=FULL -0.020305 -0.037109 -0.037109 -0.039831 -0.059676 -0.059676 -0.067146 -0.131282 -0.131282 -0.079027 -0.071155 -0.062460 -0.111018   -0.067237 -0.112680  
Quadratic configuration interaction QCISD(T)=FULL         -0.195077             -0.202186 -0.363727   -0.216371 -0.369509  
QCISD(TQ)=FULL         -0.196204   -0.217550         -0.202508 -0.359522 -0.450075 -0.215280 -0.377323  
Coupled Cluster CCSD=FULL         -0.188638           -0.221068 -0.194665 -0.349293 -0.439151 -0.208376 -0.354738 -0.444349
CCSD(T)=FULL         -0.195568           -0.227472 -0.202649 -0.362527 -0.455381 -0.216908 -0.368305 -0.460741
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ