OFFSET
0,4
COMMENTS
See Viswanath sequences (A078416 and links) for random sequences of this type.
FORMULA
a(n) = a(n-1) + (-1)^(h(n)+1)*a(n-2), with h(n):=A005614(n) (rabbit sequence or Fibonacci word), inputs a(0)=0, a(1)=1.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Oct 15 2010
STATUS
approved