OFFSET
0,1
COMMENTS
Subsequence of A226819.
LINKS
FORMULA
G.f.: (7 - 43*x) / ((1 - x)*(1 - 7*x)).
a(n) = 8*a(n-1) - 7*a(n-2) for n>1.
MATHEMATICA
Table[7^n + 6, {n, 0, 30}]
PROG
(Magma) [7^n+6: n in [0..30]];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Dec 29 2014
STATUS
approved