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A051269
Number of self-complementary 3-place relations on a 2n-element set.
0
8, 536887296, 6760803201217232481859791749120, 301541899055510925582216106793458790276811863115050592580304890195754352640
OFFSET
1,1
CROSSREFS
Cf. A047832.
Sequence in context: A371646 A076911 A182010 * A004740 A108067 A067486
KEYWORD
nonn
STATUS
approved