Element - ∆f - nth Fibonacci Number

Characters: ∆, f

Description

Get the nth fibonacci number, 1-indexed

Overloads

• num - nth_fibonacci(a) (0 -> 1, 1 -> 1, 2 -> 2, ...)

Examples

• 0 ∆f = 1
• 1 ∆f = 1
• 2 ∆f = 2
• 3 ∆f = 3
• 4 ∆f = 5
• 5 ∆f = 8
• 6 ∆f = 13
• 7 ∆f = 21
• 8 ∆f = 34
• 9 ∆f = 55
• -5 ∆f = -3