

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
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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 SlowGrowing 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 SlowGrowing 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



