# Identify the incorrect letter in this unusual sequence?

Here's a curious sequence of letters:

H H H E L I P O A
L S C S E C S A C

But one of the letters is wrong! Can you figure out which letter is wrong, and what the sequence represents?

(note: two lines used for sequence are simply for the sake of keeping it neat, the newline is not part of the puzzle)

• Looked like the periodic table elements :( May 8 '15 at 15:25

P should be B.
The periodic table overlayed with the Fibonacci sequence. H = 1, H = 1, He = 2, Li = 3, B = 5, O = 8, Al = 13...