OFFSET
0,5
REFERENCES
G. Hoehn, Selbstduale Vertexoperatorsuperalgebren und das Babymonster, Bonner Mathematische Schriften, Vol. 286 (1996), 1-85.
F. L. Williams, The role of the Patterson-Selberg zeta function of a hyperbolic cylinder in three-dimensional gravity with a negative cosmological constant, A Window Into Zeta and Modular Physics, MSRI Publications, Vol. 57, 2010.
LINKS
FORMULA
For n>=4, a(n)=A000521(m)+3*sum_{d>0, d|3, d|m}(A000521(3 * m / d^2)/d) where m=n-3. - Sean A. Irvine, Mar 24 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
More terms from Sean A. Irvine, Mar 24 2013
STATUS
approved