The shallow diago-nals of Pascal's triangle sum to members of this sequence, and this sequence'sgenerating function is x .
This mathematical construct is featured in a 2005 Foxtrot comic which alsofeatures the Perrin sequence. The nth member of this sequence is squarefulif (but not only if) n is divisible by 6 or 25. This entity is periodic moduloany m, and those periods are known as   Pisano periods. The shallow diago-nals of Pascal's triangle sum to members of this sequence, and this sequence'sgenerating function is x . The man who names this sequence used it to 1−x−x2describe the solution to a problem about breeding rabbits, and Binet's formula is a closed-form expression for the nth element of this sequence. For ten points, identify this sequence beginning 1, 1, 2, 3.
This mathematical construct is featured in a 2005 Foxtrot comic which alsofeatures the Perrin sequence.
Fibonacci sequence