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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
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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 June 9 02:20 EDT 2023. Contains 363168 sequences. (Running on oeis4.)