OFFSET
0,1
COMMENTS
Continued fraction of 2 + sqrt(110)/5 = A176220. - R. J. Mathar, Nov 21 2011
LINKS
FORMULA
a(n) = -3*(-1)^n + 7. - Paolo P. Lava, Oct 20 2006
G.f. ( -4-10*x ) / ((x-1)*(1+x)). - R. J. Mathar, Nov 21 2011
MATHEMATICA
Table[4 + 6 Mod[n, 2], {n, 0, 50}] (* Jinyuan Wang, Feb 26 2020 *)
PadRight[{}, 80, {4, 10}] (* Harvey P. Dale, Jul 12 2021 *)
PROG
(PARI) a(n)=n%2*6+4 \\ Charles R Greathouse IV, Jul 13 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved