OFFSET
1
COMMENTS
A189576 is one of many 01-sequences fixed by morphisms. It is helpful to classify a few such sequences:
Type 2,2: morphism: 0->01, 1->10, A010060 (Thue-Morse)
..
Type 2,3: Each row shows a morphism, followed by four sequences:
(1) the fixed sequence a [starting from a(0)=0],
(2) positions of 0 in a,
(3) positions of 1 in a,
(4) partial sums of a.
Some lower-numbered entries are conjectural.
..
Type 3,2: (rows as for type 2,3)
..
Type 3,3: (See A189628 for a list and discussion.)
EXAMPLE
0->01->01110->0111011011001->
MATHEMATICA
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Apr 23 2011
STATUS
approved