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A052398
Duplicate of A047890.
0
1, 2, 6, 24, 120, 719, 5003, 39429, 344837, 3291590, 33835114, 370531683
OFFSET
0,2
CROSSREFS
Sequence in context: A248838 A364231 A364234 * A047890 A297204 A071088
KEYWORD
dead
STATUS
approved