A000157 - OEIS

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A000157

Number of Boolean functions of n variables.
(Formerly M1818 N0721)

1, 2, 7, 111, 308063, 100126976263592, 131867858014413288241233435594064, 2804519150441879896741320496043335469582478995067528608051651559815168 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	REFERENCES	`M. A. Harrison, Introduction to Switching and Automata Theory. McGraw Hill, NY, 1965, p. 153 (divided by 2).` `M. A. Harrison, The number of equivalence classes of Boolean functions under groups containing negation, IEEE Trans. Electron. Comput. 12 (1963), 559-561.` `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	`Index entries for sequences related to Boolean functions`
	FORMULA	`a(n) = A000370(n)/2. [Sean A. Irvine, Feb 14, 2012]`
	CROSSREFS	`Cf. A000370.` `Sequence in context: A162634 A072664 A045310 * A034902 A101429 A206151` `Adjacent sequences: A000154 A000155 A000156 * A000158 A000159 A000160`
	KEYWORD	`nonn,changed`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Feb 13 2012`

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.