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A033148 Number of rotationally symmetric solutions for queens on n X n board. 5
1, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 8, 8, 0, 0, 64, 128, 0, 0, 480, 704, 0, 0, 3328, 3264, 0, 0, 32896, 43776, 0, 0, 406784, 667904, 0, 0, 5845504, 8650752, 0, 0, 77184000, 101492736, 0, 0, 1261588480, 1795233792, 0, 0, 21517426688, 35028172800, 0, 0, 406875119616, 652044443648, 0, 0, 8613581094912, 12530550128640, 0, 0, 194409626533888, 291826098503680, 0, 0 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

LINKS

YuhPyng Shieh, Cyclic Complete Mappings Counting Problems

M. Szabo, Non-attacking Queens Problem Page

CROSSREFS

Cf. A002562, A033148, A037224, A032522, A037223.

Sequence in context: A098939 A180215 A191928 * A186230 A027359 A035447

Adjacent sequences:  A033145 A033146 A033147 * A033149 A033150 A033151

KEYWORD

nonn

AUTHOR

Miklos SZABO (mike(AT)ludens.elte.hu)

EXTENSIONS

More terms from Jieh Hsiang and YuhPyng Shieh (arping(AT)turing.csie.ntu.edu.tw), May 20 2002

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Last modified February 12 14:29 EST 2012. Contains 205419 sequences.