My memory's achievement this morning

To get that 54, I had to look at those color buttons light up 1+2+3+..+52+53+54 = (54)*(55)/2 = 1485 times, and to press them a slightly lower number of times.
Sequence:YYYPYYYGYYPBPBGBGPBYBGBYBGBYYYPGYYBGYGBGBBBYYYGBYGBBBBP

(Yellow, Pink, Green, Blue)

And no, no cheating.