|
Search: id:A061955
|
|
|
| A061955 |
|
Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 2 (most significant digit on right). |
|
+0
142
|
|
| 1, 3, 7, 29, 375, 545, 971, 1643, 37801, 435805, 554423, 565947
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
This sequence differs from A029519 in that all least significant zeros are kept during concatenation.
|
|
LINKS
|
Index entries for related sequences
|
|
EXAMPLE
|
7654321 -> (111)(011)(101)(001)(11)(01)(1) base 2 ->11101110100111011 base 2 = 122171 and 7 divides 122171
|
|
CROSSREFS
|
Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
Sequence in context: A082096 A119325 A048722 this_sequence A113834 A057181 A136934
Adjacent sequences: A061952 A061953 A061954 this_sequence A061956 A061957 A061958
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
Larry Reeves (larryr(AT)acm.org), May 24 2001
|
|
EXTENSIONS
|
Edited and updated by Larry Reeves (larryr(AT)acm.org), Apr 12, 2002; Aug 25, 2002
|
|
|
Search completed in 0.002 seconds
|
