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A284674
0-limiting word of the morphism 0->1, 1-> 0111.
3
0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1
OFFSET
1
COMMENTS
The morphism 0->1, 1->0111 has two limiting words. If the number of iterations is even, the 0-word evolves from 0 -> 1 -> 0111 -> 10111001110111 -> 01111011101110111110111011101111011101110111; if the number of iterations is odd, the 1-word evolves from 0 -> 1 -> 0111 -> 10111001110111, as in A284677.
LINKS
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {1}, 1 -> {0, 1, 1, 1}}] &, {0}, 6] (* A284674 *)
Flatten[Position[s, 0]] (* A284675 *)
Flatten[Position[s, 1]] (* A284676 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Apr 08 2017
STATUS
approved