What comes after 66? I forgot?

2 4 6 30 32 34 36 40 42 44 46 50 52 54 56 60 62 64 66 2000 2002 2004 2006 2030

These are the numbers, when written in English, do not contain E.

You can also consider 1000,1002, 1004,1006 etc if you write them as thousand, & not one thousand

N

where N is a real number >66

67

Either 666 or 67, depending on whether you're counting linearly or by concatenation.

I prefer the first.