Fibonacci - rabbits
Leonardo Fibonacci
Leonardo Fibonacci was born around 1170 in Pisa. His father was an agent for Pisan merchands in the north of Africa. Leonardo gets a decent education.
While in Europa one still uses Roman numbers, the Arabs already had adapted a number system with placevalues. And from childhood the young Leonardo was skilled in calculating.
sequence of Fibonacci - the rabbit problem
Fibonacci loved trivial counting problems, the kind you can find all over.
But one of them made his name immortal:
"A man put a pair of rabbits in a walled space.
After a month a pair of rabbits is sexually mature and every month it gives birth to a new pair.
How many pairs doe you get after a year?"
(PS: this is just a mathematical assumption, not a real biological description of reality)
These numbers form the sequence of Fibonacci.
Here's the pedigree for the first months: