# A simple twist on a classic puzzle

Given this sequence:

0, 4, 84, 212, 1940, 358036, 14113428, 127377044

What is the next item?

Hint:

The sequence is not based on any mathematical operations

• Not in the OEIS, impressive. – IronEagle Oct 30 '19 at 15:59
• It's not difficult to come up with sequences that aren't in OEIS. What's impressive is coming up with ones that aren't there but deserve to be. (Which isn't quite the same thing as being suitable for a puzzle here, of course.) – Gareth McCaughan Oct 30 '19 at 17:22