A385861 Number of n X n yesnograms that can be solved uniquely.

1, 2, 14, 368, 49578, 24177516, 46985524156

Offset: 0

Author

Karl W. Heuer, Aug 06 2025

Keywords

• nonn
• more

Comments

A nonogram provides row and column clues indicating runs of black pixels, treating white as blank. In this variant (called a "yesnogram"), the row clues instead indicate runs of white pixels, treating black as blank. Column clues remain unchanged from the standard nonogram.

Examples

			a(2) = 14 because, of the 16 2 X 2 grids, 10/01 and 01/10 would have the same set of clues; the other 14 are solvable.
		

Links

• Bertram Felgenhauer, Counting Nonograms.
• Wikipedia, Nonogram.

Crossrefs

Main diagonal of A385862.

Cf. A242876 (solvable n X n nonograms), A384764 (solvable n X m nonograms), A383345 (solvable n X 2 nonograms or yesnograms).