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A352662 Number of singly symmetric characteristic solutions to the n-superqueens problem. 3
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 6, 11, 49, 79, 245, 498, 1192, 3798, 11594 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,12
COMMENTS
Superqueens are also called amazons. They combine the moves of queen and knight.
REFERENCES
D. E. Knuth, The Art of Computer Programming, Section 7.2.2.3 (draft, March 2022).
LINKS
EXAMPLE
For n=10 the a(10)=1 solution is
+---------------------+
| . . . A . . . . . . |
| . . . . . . . A . . |
| A . . . . . . . . . |
| . . . . A . . . . . |
| . . . . . . . . A . |
| . A . . . . . . . . |
| . . . . . A . . . . |
| . . . . . . . . . A |
| . . A . . . . . . . |
| . . . . . . A . . . |
+---------------------+
CROSSREFS
Sequence in context: A156065 A302749 A130274 * A368810 A208893 A057294
KEYWORD
nonn,more
AUTHOR
Don Knuth, Mar 25 2022
STATUS
approved

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Last modified March 29 11:45 EDT 2024. Contains 371278 sequences. (Running on oeis4.)