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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

Table of n, a(n) for n=0..11.

CROSSREFS

Sequence in context: A226437 A224287 A248838 * A047890 A297204 A071088

Adjacent sequences:  A052395 A052396 A052397 * A052399 A052400 A052401

KEYWORD

dead

STATUS

approved

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Last modified September 26 23:44 EDT 2022. Contains 357051 sequences. (Running on oeis4.)