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A005674
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2^(n-1) + 2^[ n/2 ] + 2^[ (n-1)/2 ] - F(n+3).
(Formerly M2837)
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2
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0, 0, 0, 0, 1, 3, 10, 25, 63, 144, 327, 711, 1534, 3237, 6787, 14056, 28971, 59283, 120894, 245457, 497167, 1004256, 2025199, 4077007, 8198334, 16467597, 33052491, 66293208
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,6
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REFERENCES
| R. K. Guy, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
S. Plouffe, 1031 Generating Functions and Conjectures, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
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MAPLE
| A005674:=-z**4/(2*z-1)/(z**2+z-1)/(-1+2*z**2); [Conjectured by S. Plouffe in his 1992 dissertation.]
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CROSSREFS
| A027558 divided by 2.
Sequence in context: A097763 A034506 A067988 * A089100 A089117 A176610
Adjacent sequences: A005671 A005672 A005673 * A005675 A005676 A005677
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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