OFFSET
0,3
REFERENCES
R. W. Robinson, Numerical implementation of graph counting algorithms, AGRC Grant, Math. Dept., Univ. Newcastle, Australia, 1978.
FORMULA
MATHEMATICA
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 14 2006
EXTENSIONS
a(0)=1 prepended and terms a(8) and beyond from Andrew Howroyd, Sep 04 2018
STATUS
approved