A301574 - OEIS

A301574

a(n) = distance from n to nearest 3-smooth number (A003586).

0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 1, 0, 1, 2, 2, 1, 0, 1, 2, 1, 0, 1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1, 0, 1, 2, 3, 2, 1, 0, 1, 2, 3, 4, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 3, 2, 1, 0, 1, 2, 3, 4, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,14

COMMENTS

This sequence is unbounded.

A053646 is the corresponding sequence for 2-smooth numbers (A000079).

LINKS

Altug Alkan, Table of n, a(n) for n = 1..10000

Rémy Sigrist, PARI program for A301574

Index entries for sequences related to distance to nearest element of some set

FORMULA

a(n) = 0 iff n belongs to A003586.