OFFSET
1,2
REFERENCES
R. Bayon and N. Lygeros, Hyperstructures and Automorphism Groups, submitted.
Th. Vougiouklis, The fundamental relation in hyperrings: The general hyperfield, Fourth Int. Congress Algebraic Hyperstructures and Appl. (AHA), 1991, pp. 203-211.
LINKS
FORMULA
a(1)=1, a(2)=5, a(3)=13, a(n)=14 for n>3.
G.f.: -x*(1+4*x+8*x^2+x^3)/(-1+x). - R. J. Mathar, Nov 14 2007
MATHEMATICA
PadRight[{1, 5, 13}, 120, {14}] (* Harvey P. Dale, Aug 22 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Roman Bayon (roman.bayon(AT)gmail.com), Oct 14 2007
STATUS
approved