A384484 Smallest number with shortest addition-composition chain of length n, starting with 1 and x, i.e., smallest k such that A384483(k) = n.

1, 2, 3, 5, 7, 11, 19, 70, 167, 1239, 7123

Offset

0,2

Comments

See A384480 and A384483 for details.

Links

Table of n, a(n) for n=0..10.

Crossrefs

Cf. A003064 (addition only), A383001 (addition and multiplication), A384385 (addition, multiplication, and composition), A384480, A384481, A384483, A384485.

Sequence in context: A089472 A373045 A079429 * A262378 A072299 A334199

Adjacent sequences: A384481 A384482 A384483 * A384485 A384486 A384487

Keyword

nonn,more

Author

Pontus von Brömssen, Jun 02 2025

Status

approved