The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A134793 Concatenation of next n nonprime numbers. 0
 1, 46, 8910, 12141516, 1820212224, 252627283032, 33343536383940, 4244454648495051, 525455565758606263, 64656668697072747576, 7778808182848586878890, 9192939495969899100102104105, 106108110111112114115116117118119120121 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS MATHEMATICA Module[{upto=35, comps, nn}, nn=(upto(upto+1))/2; comps=Select[Range[nn], !PrimeQ[#]&]; Table[FromDigits[Flatten[IntegerDigits/@Take[comps, {((i-1)(i))/2+1, (i(i+1))/2}]]], {i, 25}]] (* Harvey P. Dale, Sep 10 2013 *) CROSSREFS Cf. A053067, A133013. Nonprime numbers: A018252. Sequence in context: A243648 A302114 A159380 * A177639 A222097 A152501 Adjacent sequences:  A134790 A134791 A134792 * A134794 A134795 A134796 KEYWORD base,easy,nonn AUTHOR Omar E. Pol, Nov 26 2007 EXTENSIONS More terms from Harvey P. Dale, Sep 10 2013 STATUS approved

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

Last modified July 4 04:47 EDT 2022. Contains 355064 sequences. (Running on oeis4.)