This site is supported by donations to The OEIS Foundation.

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A003310 Generated by a sieve. (Formerly M2305) 8

%I M2305

%S 3,4,5,7,8,11,13,17,19,20,26,29,32,37,38,43,49,50,56,62,67,68,71,73,

%T 86,89,91,98,103,113,116,121,127,131,133,137,140,151,158,161,169,173,

%U 179,182,188,200,206,209,211,221,227,230,239,242,247,253,259,271,277,278

%N Generated by a sieve.

%C Apply the sieve of A003309, but begin with 3 rather than 2.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H Reinhard Zumkeller, <a href="/A003310/b003310.txt">Table of n, a(n) for n = 1..1000</a>

%H Popular Computing (Calabasas, CA), <a href="/A003309/a003309.pdf">Sieves: Problem 43</a>, Vol. 2 (No. 13, Apr 1974), pp. 6-7. This is Sieve #2. [Annotated and scanned copy]

%H <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a>

%t t = Range[3, 330]; r = {}; While[Length[t] >0, k = First[t]; AppendTo[r, k]; t = Drop[t, {1, -1, k}];]r (* _Ray Chandler_, Dec 02 2004 *)

%o a003310 n = a003310_list !! (n-1)

%o a003310_list = f [3..] where

%o f (x:xs) = x : f (g xs) where

%o g zs = us ++ g vs where (us, _:vs) = splitAt (x - 1) zs

%o -- _Reinhard Zumkeller_, Nov 12 2014

%Y Cf. A003309, A100464.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_.

%E More terms from _Ray Chandler_, Dec 02 2004

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