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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; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A248838 A364231 A364234 * A047890 A297204 A071088
KEYWORD
dead
STATUS
approved

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)