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A217590 Values in A091579 that need to be smoothed in order to produce A091588. 1
4, 9, 25, 68, 196, 581, 1731, 5180, 15534, 46579, 139713, 419116, 1257320 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = A091588(n) + 1 for n >= 1.

Each term is roughly 3 times the previous term.

LINKS

Table of n, a(n) for n=1..13.

F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and Allan Wilks, A Slow-Growing Sequence Defined by an Unusual Recurrence, J. Integer Sequences, Vol. 10 (2007), #07.1.2. See Eq. (28).

F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and Allan Wilks, A Slow-Growing Sequence Defined by an Unusual Recurrence [pdf, ps]. See Eq. (28).

Index entries for sequences related to Gijswijt's sequence

FORMULA

I would very much like a formula for this sequence!

CROSSREFS

Cf. A090822, A091579, A091587, A091588.

Sequence in context: A121648 A133022 A184326 * A279397 A176497 A304167

Adjacent sequences:  A217587 A217588 A217589 * A217591 A217592 A217593

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Mar 18 2013

STATUS

approved

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Last modified April 18 14:43 EDT 2019. Contains 322209 sequences. (Running on oeis4.)