Pyrene works too. I count 7 electron pairs in the outer ring, n=3, ie 3*4+2 = 7*2. It's aromatic. The thing is, you must read Huckel's rules carefully. I don't have them at my finger tips, but when using the rule, you must have a cyclic arrangement of conjugated double bonds or lone pairs in the ring system (this doesn't have to be with carbon, any heterocycle works, sulfur, nitrogen, oxygen, etc)
Draw an moledular orbital model if in doubt (or use any freeware software to calculate what you seek)...