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A056065 Order of certain group related to alternating sign matrices. 0
1, 1, 1, 1, 2, 210, 263340 (list; graph; refs; listen; history; internal format)
OFFSET

1,5

LINKS

Benjamin Wieland, Large Dihedral Symmetry of the Set of Alternating Sign Matrices, Electronic J. Combinatorics, #R37, 2000.

CROSSREFS

Sequence in context: A157479 A092700 A178388 * A050445 A167833 A167838

Adjacent sequences:  A056062 A056063 A056064 * A056066 A056067 A056068

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jul 29 2000

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Last modified February 16 07:37 EST 2012. Contains 205878 sequences.