A217590 Values in A091579 that need to be smoothed in order to produce A091588.

4, 9, 25, 68, 196, 581, 1731, 5180, 15534, 46579, 139713, 419116, 1257320

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