Roger Hui wrote:
>
> For tacit fans:
>
> fib4=: ([: +/ ;@:{&(1;0 1)^:(]`0:))"0
>
> fib4 i. 2 10
> 0 1 1 2 3 5 8 13 21 34
> 55 89 144 233 377 610 987 1597 2584 4181
>
>
Roger, this and previous fibs are great.
For tacit adverbs fans:
fib5=: ;@:{&(1;0 1)^:(+/@:)
11 fib5 0
89
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