A056668 Number of equivalence classes of 4-valued Post functions of n variables under action of symmetric group S_n.
256, 2148007936, 56713727820157015040139002378207625216, 558658663747608212482251041591910255311640242524683057405682390247387063055565341158714756695500587176090293978181121308657577535237991794589785900711936
Offset: 1
Keywords
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. See p. 295.