A019317 - OEIS

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A019317

Place n queens on an n X n board so as to leave the maximal number of unattacked squares; sequence gives number of different solutions.

1

1, 2, 16, 25, 1, 3, 38, 7, 1, 1, 2, 7, 1, 4, 3, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

CROSSREFS

Sequence in context: A295822 A212765 A343839 * A355714 A344989 A276069

Adjacent sequences: A019314 A019315 A019316 * A019318 A019319 A019320

KEYWORD

nonn

AUTHOR

Mario Velucchi (mathchess(AT)velucchi.it)

STATUS

approved