login
A305462
Fixed points of A305458.
1
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 18, 19, 20, 21, 24, 25, 26, 27, 30, 31, 32, 33, 36, 37, 38, 39, 60, 61, 62, 63, 66, 67, 68, 69, 90, 91, 92, 93, 96, 97, 98, 99, 120, 121, 122, 123, 126, 127, 128, 129, 150, 151, 152, 153, 156, 157, 158, 159, 180
OFFSET
1,3
COMMENTS
Equivalently, these are the numbers with all digits, except possibly the leading digit, equal to zero or one in primorial base.
EXAMPLE
The first terms, alongside their primorial base representation, are:
n a(n) pbr(a(n))
-- ---- ---------
1 0 (0)
2 1 (1)
3 2 (1, 0)
4 3 (1, 1)
5 4 (2, 0)
6 5 (2, 1)
7 6 (1, 0, 0)
8 7 (1, 0, 1)
9 8 (1, 1, 0)
10 9 (1, 1, 1)
11 12 (2, 0, 0)
12 13 (2, 0, 1)
13 14 (2, 1, 0)
14 15 (2, 1, 1)
15 18 (3, 0, 0)
CROSSREFS
Cf. A305458.
Sequence in context: A055569 A351119 A277046 * A072618 A267762 A296861
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Jun 01 2018
STATUS
approved