# Number puzzle - Next number in the sequence

I did a puzzle that made me calculate the last number, and I couldn't figure it out so I looked at the answer, but still don't understand how I get to that answer.

Number sequence is
4 28 68 218 44 46 268

And the following number (the answer) is:
778

How do I get to 778 using all the numbers?

• What operations can we use?
– Duck
Dec 9 '18 at 19:35