OFFSET
1,1
REFERENCES
E.-A. Majol, Note #2228, L'Intermédiaire des Mathématiciens, 9 (1902), pp. 183-185.
LINKS
FORMULA
G.f.: 9*x*(1+x)/(1-110*x+x^2) . - R. J. Mathar, Mar 07 2022
a(n) = 9*A298677(n-1). - R. J. Mathar, Mar 07 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 03 2022
STATUS
approved