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

For V (Vanadium atom)

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 -0.098436 -0.107789 -0.107789 -0.115461 -0.167622 -0.167622 -0.187878 -0.392120 -0.392120 -0.219327 -0.191041 -0.171859 -0.325198 -0.399356 -0.171859 -0.368032 -0.400383
MP3=FULL         -0.177438   -0.196643       -0.199646 -0.180156 -0.331185        
MP4=FULL   -0.119891     -0.181910       -0.403946     -0.186171 -0.348875   -0.186171 -0.375058  
B2PLYP=FULL 0.025565 -0.034334 -0.034334 -0.037040 -0.053439 -0.053439 -0.059831 -0.119049 -0.119049 -0.068781 -0.060675 -0.055334 -0.100515   -0.055334 -0.101000  
Quadratic configuration interaction QCISD(T)=FULL         -0.182009             -0.186375 -0.311941   -0.186375 -0.334420  
QCISD(TQ)=FULL         -0.182014   -0.202119         -0.186215 -0.338472 -0.410596 -0.186207 -0.339046  
Coupled Cluster CCSD=FULL         -0.177882         -0.231790 -0.200512 -0.181360 -0.329469 -0.398787 -0.181360 -0.323411 -0.399748
CCSD(T)=FULL         -0.181901           -0.205144 -0.186212 -0.338748 -0.410447 -0.186212 -0.361223 -0.411451
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