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A239783 Number of pairs of functions (f,g) from a set of n elements into itself satisfying f(g(x)) = f(g(f(x))). 0
1, 1, 14, 339, 12496, 639005, 42829536, 3624387739 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
CROSSREFS
Cf. A181162.
Sequence in context: A222984 A278194 A035273 * A020143 A161927 A253457
KEYWORD
nonn,more
AUTHOR
Chad Brewbaker, Mar 26 2014
EXTENSIONS
a(6)-a(7) from Giovanni Resta, Mar 28 2014
STATUS
approved

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Last modified February 23 23:47 EST 2024. Contains 370288 sequences. (Running on oeis4.)