A001326 Number of equivalence classes of n-valued Post functions of 2 variables under action of semi-direct product of symmetric group S_2 and complementing group D(2,n).

6, 2862, 537157696, 37252918396015625, 1289303099816839265917858176, 32115447190132359991237336502881651018804, 784637716923335095479473759060307277562325323313332617216, 24578381309444114202259488565864018899536000344974197975371115039374528219929

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).

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.

Extensions

Definition improved and more terms from Sean A. Irvine, Oct 01 2015