login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A138966 a(n) = n + (smallest composite > n). 0
5, 6, 7, 10, 11, 14, 15, 17, 19, 22, 23, 26, 27, 29, 31, 34, 35, 38, 39, 41, 43, 46, 47, 49, 51, 53, 55, 58, 59, 62, 63, 65, 67, 69, 71, 74, 75, 77, 79, 82, 83, 86, 87, 89, 91, 94, 95, 97, 99, 101, 103, 106, 107, 109, 111, 113, 115, 118, 119, 122, 123, 125, 127, 129, 131 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

1 <= a(n+1) - a(n) <= 3.

LINKS

Table of n, a(n) for n=1..65.

FORMULA

a(n) = n + A113646(n+1). - Michel Marcus, Oct 13 2013

EXAMPLE

a(1)=1+4, a(2)=2+4, a(3)=3+4, a(4)=4+6, a(5)=5+6, a(6)=6+8.

CROSSREFS

Sequence in context: A047576 A123123 A092858 * A184804 A177089 A206415

Adjacent sequences:  A138963 A138964 A138965 * A138967 A138968 A138969

KEYWORD

nonn

AUTHOR

Zak Seidov, Apr 04 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified December 18 16:39 EST 2014. Contains 252168 sequences.