Runtimes

real    0m1.244s
user    0m0.944s
sys     0m0.088s

real    0m2.023s
user    0m1.852s
sys     0m0.120s

real    0m3.895s
user    0m3.576s
sys     0m0.104s

real    0m7.450s
user    0m7.148s
sys     0m0.156s

real    0m14.908s
user    0m14.117s
sys     0m0.288s

real    0m29.716s
user    0m28.542s
sys     0m0.592s

real    0m56.734s
user    0m54.499s
sys     0m1.056s

real    2m1.994s
user    1m57.091s
sys     0m1.912s

real    3m48.312s
user    3m42.802s
sys     0m2.276s

real    11m1.233s
user    1m6.400s
sys     7m31.648s