Teraminx number of stickers is easy...
p=number of corners per face
q=number of faces
o=order of the puzzle
a%b=remainder of a/b
(sum(2*i-1+o%2;i=1..floor(o/2))*p+o%2)*q=number of sticker on any face-turning platonic solid
for teraminx:
p=5
q=12
o=7
(sum(2*i-1+o%2;i=1..floor(o/2))*p+o%2)*q
=(sum(2*i-1+7%2;i=1..floor(7/2)=3)*5+7%2)*12
= (((2*1-1+1)+(2*2-1+1)+(2*3-1+1))*5+1
=((6+4+2)*5+1)*12 (This is actually here you should have started when you saw the question, the above is just a generalization for all platonic solids for the lolz

)
=(12*5+1)*12
=60*12+12
=720+12=732...
Stop whining, how hard was that?