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A235325
Number of ordered pairs of endofunctions f,g on a set of n elements satisfying f(f(x)) = g(g(g(x))).
0
1, 1, 4, 51, 1072, 31845, 1292616, 68464207, 4555593904, 369790197705
OFFSET
0,3
CROSSREFS
Sequence in context: A336608 A376105 A349653 * A230401 A293075 A377833
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