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A007630 A queens problem.
(Formerly M5288)
0
46, 92, 341, 1787, 9233, 45752, 285053, 1846955 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

REFERENCES

M. Gardner, Fractal Music, Hypercards and More, Freeman, NY, 1991, p. 240.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=4..11.

FORMULA

a(n) = A002562(n+5). [Vaclav Kotesovec, Sep 07 2012]

CROSSREFS

Sequence in context: A234260 A211330 A121929 * A004923 A260568 A044184

Adjacent sequences:  A007627 A007628 A007629 * A007631 A007632 A007633

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mira Bernstein, Robert G. Wilson v

STATUS

approved

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Last modified December 8 11:15 EST 2016. Contains 278939 sequences.