A323463 Values of n at which A323454 reaches a new record.

1, 2, 3, 99, 369, 999, 1999, 9879, 19979

Offset: 1

Author

N. J. A. Sloane, Jan 23 2019

Keywords

• nonn
• base
• more

Comments

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

Examples

			a(4)=99 refers to the fact that it takes 12 steps to reach 99 from 1 using the Choix de Bruxelles (version 2) operation, and all numbers less than 99 (and not ending in 0 or 5) can be reached from 1 in fewer than 12 steps.
		

Links

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

Crossrefs

Cf. A323286, A343460, A323454.

Extensions

a(9) from Michael S. Branicky, Oct 01 2024