A384485 Number of integers with a shortest addition-composition chain of length n, starting with 1 and x, i.e., number of integers k with A384483(k) = n.

1, 1, 2, 3, 5, 20, 104, 700, 6779, 95596

Offset

0,3

Comments

See A384480 and A384483 for details.

Links

Table of n, a(n) for n=0..9.

Crossrefs

Cf. A003065 (addition only), A383002 (addition and multiplication), A384386 (addition, multiplication, and composition), A384480, A384482, A384483, A384484.

Sequence in context: A184252 A228833 A320950 * A291673 A076383 A024766

Adjacent sequences: A384482 A384483 A384484 * A384486 A384487 A384488

Keyword

nonn,more

Author

Pontus von Brömssen, Jun 02 2025

Status

approved