HumanEval+ / def tri(n):

Problem

Answer published by the source. Consult the official source to check your work against its answer.

def tri(n):
    """Everyone knows Fibonacci sequence, it was studied deeply by mathematicians in 
    the last couple centuries. However, what people don't know is Tribonacci sequence.
    Tribonacci sequence is defined by the recurrence:
    tri(1) = 3
    tri(n) = 1 + n / 2, if n is even.
    tri(n) =  tri(n - 1) + tri(n - 2) + tri(n + 1), if n is odd.
    For example:
    tri(2) = 1 + (2 / 2) = 2
    tri(4) = 3
    tri(3) = tri(2) + tri(1) + tri(4)
           = 2 + 3 + 3 = 8 
    You are given a non-negative integer number n, you have to a return a list of the 
    first n + 1 numbers of the Tribonacci sequence.
    Examples:
    tri(3) = [1, 3, 2, 8]
    """

tri

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Source and history

task_id

725b5057-f425-5c39-9020-98cdafcae0c8

task_key

default--test--725b5057-f425-5c39-9020-98cdafcae0c8

task_revision_id

2

config / split

default / test

Official source

initial import