|
Search: id:A138786
|
|
|
| A138786 |
|
"Left" odd composite numbers n for which n < A140607((n-1)/2). |
|
+0
4
|
|
| 9, 21, 25, 27, 35, 45, 49, 55, 69, 75, 77, 81, 93, 95, 99, 105, 115, 119, 121, 125, 133, 135, 141, 143, 147, 153, 155, 161, 165, 169, 175, 187, 189, 203, 207, 209, 213, 215, 217, 219, 221, 225, 231, 235, 237, 243, 245, 247, 253, 259, 261, 267, 279, 285, 287
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
There are odd composite numbers which are neither in this sequence nor in A140608. The first such number is 91, see A140667.
|
|
LINKS
|
Ray Chandler, Table of n, a(n) for n=1..5713
|
|
CROSSREFS
|
Cf. A140607, A039649, A140140, A138193, A138217, A138227, A138535, A138536, A138537, A138539, A140141, A000010, A000040, A140608, A140667.
Sequence in context: A008847 A111171 A067887 this_sequence A139392 A091113 A108181
Adjacent sequences: A138783 A138784 A138785 this_sequence A138787 A138788 A138789
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Vladimir Shevelev (shevelev(AT)bgu.ac.il), May 18 2008
|
|
EXTENSIONS
|
Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), May 20 2008
|
|
|
Search completed in 0.002 seconds
|
