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A327417
a(n) =
A291451
(2*n, n).
3
1, 1, 682, 7128576, 429120851544, 94066556834970720, 57496301859366489159040, 82247725949165261902606309120, 243263294602173417290925789755652480, 1356449073308047884259226117174893156252800, 13275987570857688650109290727617026478737341900800
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..10.
PROG
(SageMath) # uses[P from
A327416
]
def
A327417
(n): return P(3, 2*n).list()[n]//factorial(n)
print([
A327417
(n) for n in range(11)])
CROSSREFS
Cf.
A007820
(m=1),
A327416
(m=2), this sequence (m=3),
A327418
(m=4).
Associated triangles:
A048993
(m=1),
A156289
(m=2),
A291451
(m=3),
A291452
(m=4).
Sequence in context:
A043763
A200860
A184547
*
A145321
A175155
A174105
Adjacent sequences:
A327414
A327415
A327416
*
A327418
A327419
A327420
KEYWORD
nonn
AUTHOR
Peter Luschny
, Sep 14 2019
STATUS
approved
