Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
DEC2NM_02446910090Sharp1    Bhlhb2l    Bhlhb3    606200
DEC2BC0259689606SHARP-1    SHARP1    BHLHB3    606200
DEC2NM_0307629606SHARP1    SHARP-1    BHLHB3    606200
DEC2BC03774210090Bhlhb2l    Sharp1    Bhlhb3    606200
Dec2NM_13330310116Sharp1    SHARP-1    Bhlhb3   
dec2NC_0043547227E4    S36    cp36    s365    Dms36    dec-2    s36-1    CG1478    fs(1)C2    dec[[2]]   
dec2NM_0785327227E4    S36    cp36    s365    Dms36    dec-2    s36-1    CG1478    fs(1)C2    dec[[2]]   
DEC2AB0440889606606200
DEC2AB04409010090606200

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002