Storage
prime_n.txt and p2_omega2.txt under q3/ are regenerable by
q3/sieve_n2p1. At the list is several hundred
megabytes, above GitHub's blob limit. They are gitignored. Counts,
Wolf rows, histogram, and SHA-256 of both lists live in
q3/n2p1.json. Replay:
problems/landau-n2-plus-1/compute/q3/run_all.sh
The lists in compute/ and the lists in q2/ stay
committed.