OFFSET
0,3
COMMENTS
Calculated by brute force computational enumeration.
The moments of the imaginary part of the suitably normalized E8 lattice Green's function.
LINKS
S. Savitz and M. Bintz, Exceptional Lattice Green's Functions, arXiv:1710.10260 [math-ph], 2017.
FORMULA
Summed combinatorial expressions and recurrence relations for this sequence exist, but have not been determined. These would allow one to write a differential equation or hypergeometric expression for the E8 lattice Green's function.
EXAMPLE
The 2-step walks consist of hopping to one of the 240 minimal vectors of the E8 lattice and then back to the origin.
CROSSREFS
KEYWORD
nonn,walk,more
AUTHOR
Samuel Savitz, Sep 26 2017
STATUS
approved