login
This site is supported by donations to The OEIS Foundation.

 

Logo

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified August 16 19:56 EDT 2017. Contains 290627 sequences.