Excel 2007 : Need to sum if the numbers are multiples of 2 or 3

List of numbers, e.g,

1 2 3 4 5 6 7 8 9 10 11 12 13 14 etc. in (say) Column A.

Need to sum the numbers which are multiple of 2 and 3 [Catch is that the number multiple of both 2 and 3 need to be picked up only once, for example 6].

Thanks