A005310 - OEIS

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A005310

Fermionic string states.
(Formerly M0359)

2, 2, 6, 14, 30, 62, 126, 246, 472 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	COMMENTS	`See the reference for precise definition.` `The g.f. 2(1-2z+2z2)/(-1+2z)/(z-1) conjectured by S. Plouffe in his 1992 dissertation is unlikely to be correct.`
	REFERENCES	T. Curtright, ``Counting symmetry patterns in the spectra of strings,'' in H. J. de Vega and N. S\'{a}nchez, editors, String Theory, Quantum Cosmology and Quantum Gravity. Integrable and Conformal Invariant Theories. World Scientific, Singapore, 1987, pp. 304-333. `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992. S. Plouffe, 1031 Generating Functions and Conjectures, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
	CROSSREFS	`Sequence in context: A019101 A051890 A071109 * A002203 A097341 A142710` `Adjacent sequences: A005307 A005308 A005309 * A005311 A005312 A005313`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 11:25 EST 2012. Contains 205777 sequences.