login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A001322 Number of equivalence classes of n-valued Post functions of 2 variables under action of symmetric group S_2.
(Formerly M4884 N2094)
0
12, 10206, 2148007936, 149011627197265625, 5157212399256236248406163456, 128461788760529439274299006884487791149204, 3138550867693340381917894873863110037264541113810027544576 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

REFERENCES

M. A. Harrison and R. G. High, On the cycle index of a product of permutation groups, J. Combin. Theory, 4 (1968), 277-299.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

I. Strazdins, On the number of types of l-adic functions (in Russian), Proc. Riga Polytech. Inst. 10, No. 1 (1963), 167-186.

LINKS

Table of n, a(n) for n=2..8.

CROSSREFS

Cf. A003180, A001321.

Sequence in context: A343699 A346717 A012732 * A159411 A074983 A159413

Adjacent sequences:  A001319 A001320 A001321 * A001323 A001324 A001325

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Vladeta Jovovic, Aug 09 2000

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 17 03:44 EDT 2022. Contains 356181 sequences. (Running on oeis4.)