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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A088638 a(1) = 1, a(n+1) = a(n)+ smallest composite number not added earlier if a(n) is noncomposite else a(n+1) = a(n) + the smallest prime not added earlier. 1

%I #5 Dec 05 2013 19:56:34

%S 1,5,11,19,28,30,33,38,45,56,69,86,105,128,157,167,179,193,208,239,

%T 255,292,333,376,423,476,535,596,663,734,807,886,969,1058,1155,1256,

%U 1359,1466,1575,1688,1815,1946,2083,2101,2240,2389,2409,2560,2717,2880,3047

%N a(1) = 1, a(n+1) = a(n)+ smallest composite number not added earlier if a(n) is noncomposite else a(n+1) = a(n) + the smallest prime not added earlier.

%Y Cf. A088637.

%K nonn

%O 1,2

%A _Amarnath Murthy_, Oct 26 2003

%E More terms from _David Wasserman_, Aug 16 2005

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 19 10:10 EDT 2024. Contains 374392 sequences. (Running on oeis4.)