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A274948 Irregular triangle read by rows: T(n,k) (n>=1, 0 <= k <= n^2) = maximal number of squares not attacked by any arrangement of k queens on an n X n board = n^2 - A274947(n,k). 3
1, 0, 4, 0, 0, 0, 0, 9, 2, 1, 0, 0, 0, 0, 0, 0, 0, 16, 6, 3, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 12, 7, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
For further information see A274947, which is the main entry for this problem.
LINKS
EXAMPLE
The triangle begins:
1, 0,
4, 0, 0, 0, 0,
9, 2, 1, 0, 0, 0, 0, 0, 0, 0,
16, 6, 3, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
25, 12, 7, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
36, 20, 13, 9, 8, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
...
CROSSREFS
Sequence in context: A351572 A108708 A290322 * A005925 A333037 A070206
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Jul 27 2016
EXTENSIONS
Corrections and more terms from Andrey Zabolotskiy, Jul 29 2016
STATUS
approved

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Last modified March 19 02:49 EDT 2024. Contains 370952 sequences. (Running on oeis4.)