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peter@norvig.com numbers
Description:Exercises about number theory, or counting.
Number sequences:
collatz H
longest_collatz H
pythag H
ramanujan H
Primes, divisors, and factors:
divisors H
perfects H
find_amicable H
Combinatorics, counting:
num_paths H
change H
perfect_shuffle
number_perfect_shuffles H
permutations H
nrectangles H
combinations H
Authoring docs
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