OFFSET
0,2
COMMENTS
Bisection of A112627.
LINKS
FORMULA
a(n) = (3/5)*2^(4*n+1) - (1/5).
a(n) = 16*a(n-1) + 3 for n > 0.
a(n) = (1/5)*A153893(4*n+1).
a(n) = A016029(4*n+2).
a(n) = A112627(2*n+1).
G.f.: (1+2*x)/((1-x)*(1-16*x)). - Colin Barker, May 06 2012
MATHEMATICA
(3*2^(4*Range[0, 20]+1)-1)/5 (* or *) LinearRecurrence[{17, -16}, {1, 19}, 30] (* Harvey P. Dale, Jul 21 2021 *)
PROG
(Magma) [(3/5)*2^(4*n+1) - (1/5): n in [0..20]];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Brad Clardy, Apr 30 2012
STATUS
approved