A058976 Number of inequivalent n-variable 3-valued Post functions under action of complementing group D(n,3).

18, 5346, 953350947018, 27714155515204399193517936441633366786, 2724676327686279943840970955808149115560850239284680391197227771656355326713750473204820187166236658820072758036618

Offset

1,1

Comments

Next term has 347 digits.

References

M. A. Harrison, Introduction to Switching and Automata Theory. McGraw Hill, NY, 1965, p. 144.

Links

Table of n, a(n) for n=1..5.

Formula

a(n)=2^(-n)*Sum_{k=0..n} binomial(n, k)*3^((3^(n-k)+3^n)/2).

Crossrefs

Cf. A000231.

Sequence in context: A346209 A036214 A188799 * A319942 A013723 A366518

Adjacent sequences: A058973 A058974 A058975 * A058977 A058978 A058979

Keyword

easy,nonn

Author

Vladeta Jovovic, Jan 14 2001

Status

approved