A001322 Number of equivalence classes of n-valued Post functions of 2 variables under action of symmetric group S_2.

12, 10206, 2148007936, 149011627197265625, 5157212399256236248406163456, 128461788760529439274299006884487791149204, 3138550867693340381917894873863110037264541113810027544576

Offset: 2

Author

N. J. A. Sloane

Keywords

• nonn

References

• 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

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

Crossrefs

Cf. A003180, A001321.

Extensions

More terms from Vladeta Jovovic, Aug 09 2000