A005756 - OEIS

A005756

Number of non-degenerate fanout-free Boolean functions of n variables having AND rank 2.
(Formerly M3607)

4, 24, 304, 5440, 125824, 3566080, 119614464, 4633387008, 203524112384, 9995546722304, 542730361241600, 32281981804347392, 2087454641985945600, 145797871819529650176, 10938609224992417644544, 877346430770422497673216

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OFFSET

2,1

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=2..17.

J. P. Hayes, Enumeration of fanout-free Boolean functions, J. ACM, 23 (1976), 700-709.

Index entries for sequences related to Boolean functions

FORMULA

Hayes (1976, Theorem 3) gives a recurrence.

CROSSREFS

A column of A225171.

Sequence in context: A255440 A052727 A219118 * A206239 A374386 A361054

Adjacent sequences: A005753 A005754 A005755 * A005757 A005758 A005759

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Aug 26 2016

STATUS

approved