OFFSET
0,2
FORMULA
a(n) ~ 3^(3*n - 1/2) * n^n / (2^(2*n - 1/2) * exp(n)). - Vaclav Kotesovec, Aug 02 2024
MATHEMATICA
Table[Pochhammer[2*n, n], {n, 0, 17}] (* Amiram Eldar, Mar 22 2022 *)
PROG
(Sage)
def a(n): return rising_factorial(2*n, n)
print([a(n) for n in range(18)])
(Python)
from sympy import rf
def A352601(n): return rf(2*n, n) # Chai Wah Wu, Mar 22 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Luschny, Mar 22 2022
STATUS
approved