0, 1, 8, 144 (EN)

While surfing the Internet I recently found an interesting (although completely incomprehensible) proof of a conjecture stating that 0, 1, 8 and 144 are the only perfect squares in the famous Fibonacci sequence. For greenhorns: Fibonacci sequence starts with 0 followed by 1, then each subsequent terms is a sum of two preceding terms: 0,… Czytaj dalej 0, 1, 8, 144 (EN)

Reflected-sound-of-underground-spirits, again

A little bird told me that car insurance prices are going up again this year - both in Ireland and in other EU countries. It is slightly against the common sense; the usual logic used to be: "No claims? We'll reward you with a lower premium next year!". Not anymore, unfortunately. For some totally incomprehensible… Czytaj dalej Reflected-sound-of-underground-spirits, again