Økern Portal is, with it's about 55000 square meters, one of Oslo biggest office buildings. In addition to offices, amongst other things it hosts a hotel, several restaurants, a gym and a hair-dresser. The ambition is for the building to be a meeting place also for the locals in the fast growing area around Løren, Økern and Hovind. A destinaton that combines the community of a village and the diversity of the big city. One of the main attractions is the big roof terrace, of which large parts are also open to the public during the summer.
Of course such a place deserves a geocache too, and here it is. Unfortunately (?) you need to solve a puzzle before you get to know where it is located. The puzzle in inspired by the number-crunching that some of the tennants do for a living. Below is a matrix of numbers that can be reorganized and transformed into something that will reveal the hiding place. Good luck and have fun!
