Looks like D02 Queens Pawn Game to me.

It is called the Blackmar-Diemer Gambit, most often seen via 1. d4 d5 2. e4, going straight for the center.

Its a transposition into the Blackmar Diemar Gambit normally arrived at by

Thanks

i think the Blackmar Diemar Gambit is a very good opening

I played Blackmar Diemar Gambit before...

This is a slightly inferior way to enter the Blackmar Diemer, as Black has the extra option of playing the Hubner Defense e.g. Nxe4 instead of dxe4 which simply transposes.  Better is 2 e4, although this defense occurs in the Indian game, when Black plays an early d5.