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 A285621 Fixed point of the morphism 0->11, 1->1001. 3
 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1 LINKS Clark Kimberling, Table of n, a(n) for n = 1..10000 EXAMPLE 0 -> 11 -> 10011001 -> 100111111001100111111001 -> 10011111100110011001100110011001... -> MATHEMATICA s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 0, 0, 1}}] &, {0}, 10] (* A285621 *) Flatten[Position[s, 0]]  (* A285622 *) Flatten[Position[s, 1]]  (* A285623 *) CROSSREFS Cf. A285622, A285623, A285625. Sequence in context: A284369 A194661 A285427 * A204435 A331313 A267155 Adjacent sequences:  A285618 A285619 A285620 * A285622 A285623 A285624 KEYWORD nonn,easy AUTHOR Clark Kimberling, May 01 2017 STATUS approved

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Last modified October 31 11:50 EDT 2020. Contains 338101 sequences. (Running on oeis4.)