OFFSET
0,3
COMMENTS
a(n)/n! = A000904(n-2) for n >= 2.
REFERENCES
I. Kaplansky and J. Riordan, The problème des ménages, Scripta Math. 12, (1946), 113-124. See p. 115, "n! b_{n+1}".
LINKS
I. Kaplansky and J. Riordan, The problème des ménages, Scripta Math. 12, (1946), 113-124. [Scan of annotated copy]
CROSSREFS
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jul 20 2020
STATUS
approved