Lenny Conundrum 203

[munduses]

What is the next number in this sequence?

52, 28, 33, 63, 73, 23, 56,...

This seems quite hard, since I can't find any mathematical logic in it. Actually I think the solution maybe lies more in what the numbers represent, not in the numbers themselves.

[MT]

i know the answer
luckily i have find it quite fast :) somethimes im inspired ...

[AySz88]

Oy. Is it just me, or does it seem like the puzzlemaster has changed?

Oh, I could just fit any eighth-order polynomial to these....

This feels too much like a mystery pic search... *stricken: I'm sitting this one out...*.

[edit] Never mind, looks like the neoboards gave too big of a hint away.