3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 … modulo 89

  • An application of group theory to Navy sonar — can you generate a sequence whose 1-differences are random? (whose 1-autocorrelations are nil)

  • Also the patterns look a bit like low-discrepancy sequences:
     

     
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