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A235326
Number of ordered pairs of endofunctions f,g on a set of n elements satisfying f(f(f(x))) = g(g(g(x))).
0
1, 1, 4, 51, 1504, 66525, 4196856, 359031967, 39705044464, 5476674540825
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
Table of n, a(n) for n=0..9.
CROSSREFS
Cf. A000248, A000949.
Sequence in context: A293075 A300732 A220282 * A210834 A287231 A289708
Adjacent sequences: A235323 A235324 A235325 * A235327 A235328 A235329
KEYWORD
nonn,more
AUTHOR
Chad Brewbaker, Mar 26 2014
EXTENSIONS
a(6)-a(7) from Giovanni Resta, Mar 26 2014
a(8)-a(9) from Giovanni Resta, Mar 28 2014
STATUS
approved

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Last modified October 28 09:36 EDT 2024. Contains 377158 sequences.
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