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A027320 Duplicate of A027319. 0
1, 3, 8, 20, 120, 432, 1512, 5184, 17496, 58320, 192456, 629856, 2047032 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Table of n, a(n) for n=0..12.
CROSSREFS
Sequence in context: A108189 A148768 A110861 * A027319 A297973 A291176
Adjacent sequences: A027317 A027318 A027319 * A027321 A027322 A027323
KEYWORD
dead
STATUS
approved

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Last modified May 15 06:57 EDT 2024. Contains 372538 sequences. (Running on oeis4.)