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A027320
Duplicate of
A027319
.
0
1, 3, 8, 20, 120, 432, 1512, 5184, 17496, 58320, 192456, 629856, 2047032
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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 April 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)
