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A091588
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A smoothed version of A091587 (but still mysterious).
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3
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1, 3, 8, 24, 67, 195, 580, 1730, 5179, 15533, 46578, 139712, 419115, 1257319
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Each term is roughly 3 times the previous term.
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LINKS
| F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and A. R. Wilks, A Slow-Growing Sequence Defined by an Unusual Recurrence, J. Integer Sequences, Vol. 10 (2007), #07.1.2.
F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and A. R. Wilks, A Slow-Growing Sequence Defined by an Unusual Recurrence [pdf, ps].
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FORMULA
| I would very much like a formula for this sequence!
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CROSSREFS
| Records in A091839. Cf. A090822, A091577, A091587.
Sequence in context: A096886 A176904 A056332 * A018046 A095125 A078055
Adjacent sequences: A091585 A091586 A091587 * A091589 A091590 A091591
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Mar 05 2004
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EXTENSIONS
| a(10)-a(13) from Allan Wilks, Mar 10 2004
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