This site is supported by donations to The OEIS Foundation.

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!)
 A067823 Start with 2 and concatenate ("absorb") the next prime; continually repeat this procedure. 3
 2, 23, 2329, 23292333, 2329233323292337, 23292333232923372329233323292391, 2329233323292337232923332329239123292333232923372329233323292583 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE The next prime after 2 is 3, so 23 follows 2 in the sequence. The next prime after 23 is 29, so 2329 comes after 23 in the sequence. MATHEMATICA NextPrim[n_] := Block[{k = n + 1}, While[ !PrimeQ[k], k++ ]; k]; f[n_] := ToExpression[ ToString[n] <> ToString[ NextPrim[n]]]; NestList[f, 2, 7] CROSSREFS Sequence in context: A082963 A083759 A240563 * A114794 A090509 A069151 Adjacent sequences:  A067820 A067821 A067822 * A067824 A067825 A067826 KEYWORD easy,nonn,base AUTHOR Joseph L. Pe, Feb 07 2002 EXTENSIONS Edited and extended by Robert G. Wilson v, Feb 10 2002 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 21 13:45 EST 2014. Contains 252321 sequences.