A323464 Values of n at which A323484 reaches a new record.

1, 2, 3, 6, 20, 40, 80, 1975, 3999

Offset

1,2

Comments

The corresponding numbers of steps are 0, 1, 11, 12, 13, 14, 15, 16, 17.

Links

Table of n, a(n) for n=1..9.

Eric Angelini, Lars Blomberg, Charlie Neder, Remy Sigrist, and N. J. A. Sloane, "Choix de Bruxelles": A New Operation on Positive Integers, arXiv:1902.01444, Feb 2019; Fib. Quart. 57:3 (2019), 195-200.

Example

a(4)=20 refers to the fact that it takes 13 steps to reach 100 from 5 using the Choix de Bruxelles (version 2) operation, and all multiples of 5 less than 100 can be reached from 5 in fewer than 13 steps.

Crossrefs

Cf. A323286, A323460, A323454, A323484.

Sequence in context: A173744 A227316 A176806 * A168268 A340652 A361648

Adjacent sequences: A323461 A323462 A323463 * A323465 A323466 A323467

Keyword

nonn,base,more

Author

N. J. A. Sloane, Jan 23 2019

Status

approved