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A046722
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Number of semi-meanders of order n with 3 components.
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2
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1, 3, 11, 37, 126, 430, 1454, 4976, 16880, 57824, 197010, 675428, 2310268, 7927778, 27205180, 93448486, 321537086, 1105589516, 3812424912, 13121988240, 45330375774, 156172996170, 540314673678, 1863197292582, 6454265995454, 22275589419432, 77246945788890, 266813803179348
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OFFSET
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3,2
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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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EXTENSIONS
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STATUS
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approved
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