3 ms·

The answer is just 26? That’s crazy. Wonder if there’s any way to intuit this before working it out.

• eddd-ddde 2y ago
  There are some "double counting" techniques which lead to very intuitive solutions. Perhaps one could find such a solution.
• khana 2y ago
  [dead]
• lupire 2y ago
  https://oeis.org/A000629 https://oeis.org/A000629 Number of necklaces of partitions of n+1 labeled beads.