Which lookup code do I use for the following

On a worksheet I have a row starting with a particular number, what I need
to do is for excel to look for the exact match to the number in the range
"a10:a20", When it finds the match in need the code to copy the entire row
to that number in the range?

some thing like this

a b c d e
1 10
2 11
3 12
4 13
5 14
6 15

13 alpha beta charlie delta echo

if I have 13 in cell "a35" I would like it to copy like this

a b c d e f
1 10
2 11
3 12
4 13 alpha beta charlie delta echo
5 14
6 15


Hope anyone can help

Thanks

Browie