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A064120

A036981(n)/n!^2.

1

1, 6, 180, 873600, 772107033600

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..4.

Index entries for sequences related to tournaments

CROSSREFS

Sequence in context: A225776 A051357 A251671 * A041429 A089905 A222887

Adjacent sequences: A064117 A064118 A064119 * A064121 A064122 A064123

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane, Dec 01 2001

STATUS

approved