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A005632 Bishops on a 2n+1 X 2n+1 board (see Robinson paper for details).
(Formerly M3923)
1
0, 0, 5, 22, 258, 1628, 18052, 145976, 1837272, 18407664, 265312848, 3184567136, 52020223648, 728304073664, 13317701313600, 213083801827200, 4314950946864000, 77669134543011584, 1725980887361498368, 34519618313219995136, 835374767116711506432, 18378244896208168541184 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

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=1..22.

R. W. Robinson, Counting arrangements of bishops, pp. 198-214 of Combinatorial Mathematics IV (Adelaide 1975), Lect. Notes Math., 560 (1976). [The sequence mu(2k+1).]

R. W. Robinson, Counting arrangements of bishops, pp. 198-214 of Combinatorial Mathematics IV (Adelaide 1975), Lect. Notes Math., 560 (1976). (Annotated scanned copy)

MAPLE

For Maple program see A005635.

CROSSREFS

Sequence in context: A115657 A066865 A183902 * A183408 A298322 A299215

Adjacent sequences:  A005629 A005630 A005631 * A005633 A005634 A005635

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from N. J. A. Sloane, Sep 28 2006

STATUS

approved

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Last modified February 24 01:16 EST 2020. Contains 332195 sequences. (Running on oeis4.)