A179674 revision #35
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A179674
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Number of binary sequences of length n having a conjugate at Hamming distance 2.
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2
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0, 2, 6, 12, 30, 54, 98, 160, 234, 400, 462, 864, 806, 1722, 1530, 3328, 1938, 7290, 2774, 13360, 6090, 26422, 5106, 60096, 7900, 113256, 21600, 240240, 10614, 535980, 13082, 1065984, 82962, 2244340, 34650, 4894560, 22718, 9984462, 345930, 21050240, 31242, 44773848, 36206
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OFFSET
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1,2
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LINKS
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Jon Maiga's Sequence Database, A179674.
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FORMULA
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EXAMPLE
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For n = 3 the a(3) = 6 solutions are all 8 strings except 000, 111.
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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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editing
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