TREE(3) is significantly larger, though the explanations as far as I've found them require understanding much more complicated maths than for Graham's number (at least, I can follow the explanation for Graham's number, but not TREE(3)).
The fun bit about TREE(3) is that the sequence TREE(1), TREE(2), TREE(3) goes :
TREE(1): 1
TREE(2): 3
TREE(3): explosion
n(4) is another fun one. n(3) is less than Graham's number, which itself is roughly A^64(4). n(4) is about A^A^(187196)(1)
The fun bit about TREE(3) is that the sequence TREE(1), TREE(2), TREE(3) goes :
TREE(1): 1
TREE(2): 3
TREE(3): explosion
n(4) is another fun one. n(3) is less than Graham's number, which itself is roughly A^64(4). n(4) is about A^A^(187196)(1)
http://everything2.com/title/TREE%25283%2529