What is the next number in the sequence? 21,45,66,102,115,171,?

I admit, this problem is very difficult, hence difficult sequence. I dont know if this is much of a hint, but it will lead you in the right direction, it does not have anything to do with roman numerals, chemistry tables, or words in an elementary essay, you can figure this out without any research. The numbers have no more meaning then the number itself, they represent nothing but part of a formula.

Posted by Freddy Grants on 2003-10-25 10:13:03