OFFSET
0,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (2,-1,-1,2,-1,-1,2,-1).
FORMULA
Tersum m + n : write m and n in base 3 and add mod 3 with no carries, e.g. 5 + 8 = "21" + "22" = "10" = 1.
G.f.: (6 - 5*x - 3*x^3 + 4*x^4 - 3*x^6 + 4*x^7)/((-1+x)^2*(1+x^3+x^6)). - Jinyuan Wang, Mar 10 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved