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A052398 Duplicate of A047890. 0
1, 2, 6, 24, 120, 719, 5003, 39429, 344837, 3291590, 33835114, 370531683 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A121987 A177524 A164872 * A047890 A071088 A177533

Adjacent sequences:  A052395 A052396 A052397 * A052399 A052400 A052401

KEYWORD

dead

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Last modified February 16 15:27 EST 2012. Contains 205930 sequences.