Identities applicable to these are due to Gelin an
Identities applicable to these are due to Gelin and Ces?o. d'Ocagne, and Catalan. They are a special case of the Lucas sequence, terms in which obey the same recurrence relation as these numbers. The ratio of successive ones of these converges to four over quantity one plus root five squared, which is one over the golden ratio squared. They are the sums of successive diagonals of Pascal's triangle and each one is equal to the sum of the two before it. FTP, name this set of numbers originally devised by considering the multiplication of rabbits and which are named for a Pisan mathematician.
Identities applicable to these are due to Gelin and Ces?o. d'Ocagne, and Catalan.
Fibonacci numbers or the Fibonacci sequence