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A000808
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Number of switching networks (see Harrison reference for precise definition).
(Formerly M4726 N2020)
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1
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OFFSET
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1,1
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COMMENTS
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The next term a(8) is too large to be displayed here.
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REFERENCES
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N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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FORMULA
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a(n) = (2^(2^(n+1)) + (2^n-1)*2^(2^n))/2^n. - Sean A. Irvine, Jul 04 2011
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MATHEMATICA
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a[n_]:=(2^(2^(n+1))+(2^n-1)*2^(2^n))/2^n; Table[a[n], {n, 7}] (* James C. McMahon, Dec 07 2023 *)
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PROG
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(Magma) [(2^(2^(n+1))+(2^n-1)*2^(2^n))/2^n: n in [1..8]]; // Vincenzo Librandi, Jul 04 2011
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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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