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A106437
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Fixed point of the morphism 1->4, 2->1222, 3->2, 4->3444, applied 4*k times to 4.
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0
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4, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 2, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 2, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 1, 2, 2, 2, 2, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 2, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 2, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 1, 2, 2, 2, 2, 3
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OFFSET
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0,1
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LINKS
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FORMULA
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1->{4}, 2->{1, 2, 2, 2}, 3->{2}, 4->{3, 4, 4, 4}.
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MATHEMATICA
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s[1] = {4}; s[2] = {1, 2, 2, 2}; s[3] = {2}; s[4] = {3, 4, 4, 4}; t[a_] := Flatten[s /@ a]; p[0] = {1}; p[1] = t[p[0]]; p[n_] := t[p[n - 1]] aa = p[5]
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CROSSREFS
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KEYWORD
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nonn,easy,less
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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