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A061056
Duplicate of
A060777
.
0
1, 2, 3, 6, 12, 30, 72, 210, 630, 1920, 6336, 22176, 78975, 295680, 1144000, 4576000
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..16.
CROSSREFS
Sequence in context:
A300323
A261230
A014278
*
A060777
A200744
A089430
Adjacent sequences:
A061053
A061054
A061055
*
A061057
A061058
A061059
KEYWORD
dead
AUTHOR
Ed Pegg Jr
, May 28 2001
STATUS
approved
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Last modified April 19 08:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)