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A005307 Bosonic string states.
(Formerly M0028)
0
1, -1, 0, 0, 1, 0, 1, 0, 2, 0, 3, 1, 6, 2, 9, 6, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,9

COMMENTS

See the reference for precise definition.

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=0..16.

T. Curtright, Counting symmetry patterns in the spectra of strings, in H. J. de Vega and N. Sánchez, editors, String Theory, Quantum Cosmology and Quantum Gravity. Integrable and Conformal Invariant Theories. World Scientific, Singapore, 1987, pp. 304-333, Table 2.

CROSSREFS

Sequence in context: A078051 A130627 A006209 * A340385 A143351 A350962

Adjacent sequences:  A005304 A005305 A005306 * A005308 A005309 A005310

KEYWORD

sign

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified May 18 21:30 EDT 2022. Contains 353825 sequences. (Running on oeis4.)