This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A168531 Numbers that are the products of 3 distinct primes and they are sum of 3 consecutive products of 3 distinct primes. 0
 138, 285, 354, 715, 759, 861, 1158, 1335, 1362, 1390, 1498, 1582, 1767, 1834, 1986, 2013, 2065, 2255, 2298, 2345, 2390, 2406, 2702, 2865, 2967, 3201, 3245, 3302, 3435, 3678, 3730, 3801, 3846, 3874, 3955, 4015, 4053, 4090, 4142, 4498, 4521, 4551, 4634 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE 30+42+66=138, 78+102+105=285,.. MATHEMATICA f[n_]:=Last/@FactorInteger[n]=={1, 1, 1}; a=30; b=42; lst={}; Do[If[f[n], p=a+b+n; If[f[p], AppendTo[lst, p]]; a=b; b=n], {n, 65, 7!}]; lst CROSSREFS Cf. A007304 Sequence in context: A264897 A202441 A187206 * A260133 A317579 A281592 Adjacent sequences:  A168528 A168529 A168530 * A168532 A168533 A168534 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, Nov 28 2009 STATUS approved

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

Last modified June 17 15:28 EDT 2019. Contains 324194 sequences. (Running on oeis4.)