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A217930
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Number of sequences of n 2's and 3's with curling number 2, which have the form XY^2 with Y = 2, and which are not robust.
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2
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0, 1, 0, 0, 0, 1, 0, 2, 0, 4, 1, 7, 1, 18, 0, 32, 5, 65, 5, 130, 4, 261, 19, 504, 16, 1043, 20, 2028, 81, 4043, 82, 8155, 81
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OFFSET
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1,8
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COMMENTS
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Let S be a sequence of n 2's and 3's with curling number 2 and which has the form XY^2 with Y = 2. S is robust if no proper suffix of S^3 has curling number > 2.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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