This sequence appears to decrease irregularly, so let's examine the differences between consecutive terms:

• $8426 - 384 = 8042$
• $384 - 96 = 288$
• $96 - 54 = 42$
• $54 - 20 = 34$

The differences are: $8042, 288, 42, 34$, but they don’t form a simple arithmetic or geometric pattern. Let's investigate further to detect any possible relationship.

It’s possible this sequence is non-linear or has some distinct, hidden rule, so I’d need more information or context to fully decipher the next term.

Would you like further assistance on this, or do you want me to explore any other type of sequence rule?

Here are 5 potential relative questions:

1. Could this sequence involve a piecewise function or special condition?
2. Should I check for a pattern with alternating steps?
3. Could this be a sequence related to a specific problem or scenario?
4. Is there a pattern in the ratio of successive terms rather than differences?
5. Could the numbers be derived from a more complex mathematical function?

Tip: When tackling sequences, always check both differences and ratios, as many sequences use a combination of operations to progress.