OFFSET
1,2
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..200
MATHEMATICA
Array[#!*StirlingS1[2 # - 1, #] &, 14] (* Michael De Vlieger, Jan 24 2022 *)
PROG
(Haskell)
a238685 n = a000142 n * a008275 (2 * n - 1) n
(PARI) a(n) = n!*stirling(2*n-1, n, 1); \\ Michel Marcus, Jan 24 2022
CROSSREFS
KEYWORD
sign
AUTHOR
Reinhard Zumkeller, Mar 02 2014
STATUS
approved