|
| |
|
|
A103755
|
|
Number of contiguous digits i in the counting numbers, for i=1.
|
|
0
|
|
|
|
1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,3
|
|
|
COMMENTS
|
Write the natural numbers as an infinite sequence of digits, starting at the left; and count the digits of each group of "1"'s you encounter (the smallest "groups" have one "1").
|
|
|
LINKS
|
Table of n, a(n) for n=1..105.
|
|
|
EXAMPLE
|
a(1)=1: the first "1" of the counting numbers, isolated.
a(2)=1: the second "1", first digit of number 10, isolated.
a(3)=3 two "1"'s of 11 and one "1" of 12 = three "1"'s, the next group of "1"'s.
|
|
|
CROSSREFS
|
Sequence in context: A260196 A094404 A103756 * A326538 A333844 A317933
Adjacent sequences: A103752 A103753 A103754 * A103756 A103757 A103758
|
|
|
KEYWORD
|
base,easy,nonn
|
|
|
AUTHOR
|
Alexandre Wajnberg, Mar 28 2005
|
|
|
STATUS
|
approved
|
| |
|
|
