login
This site is supported by donations 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; 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.

CROSSREFS

Cf. A003180, A001321.

Sequence in context: A107254 A012532 A012732 * A159411 A074983 A159413

Adjacent sequences:  A001319 A001320 A001321 * A001323 A001324 A001325

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 09 2000

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 14 20:38 EST 2012. Contains 205663 sequences.