OFFSET
1,3
COMMENTS
Every positive integer appears twice in this sequence.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10048
Rémy Sigrist, PARI program
EXAMPLE
The first terms, alongside the corresponding terms of A376637, are:
-- ---- ---------- -------------
1 1 1 1
2 1 2 1
3 2 11 2
4 3 12 11
5 3 21 11
6 2 22 2
7 5 112 21
8 4 122 12
9 4 211 12
10 5 221 21
11 9 1121 211
12 6 1122 22
13 7 1211 112
14 7 2122 112
15 6 2211 22
16 9 2212 211
PROG
(PARI) \\ See Links section.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Oct 01 2024
STATUS
approved