A168474 Primes of the form: sum of two consecutive products of two distinct primes.

29, 43, 59, 67, 73, 97, 127, 151, 167, 173, 233, 241, 283, 313, 317, 461, 521, 541, 593, 653, 701, 727, 787, 839, 907, 967, 1249, 1409, 1439, 1471, 1549, 1601, 1831, 1867, 1873, 1913, 1993, 2029, 2083, 2089, 2287, 2311, 2351, 2393, 2579, 2593, 2693, 2729

Offset

1,1

Links

Table of n, a(n) for n=1..48.

Example

14+15=29, 21+22=43, 26+33=59, ..

Mathematica

f[n_]:=Last/@FactorInteger[n]=={1, 1}; a=6; lst={}; Do[If[f[n], p=a+n; If[PrimeQ[p], AppendTo[lst, p]]; a=n], {n, 9, 7!}]; lst

Crossrefs

Cf. A006881

Sequence in context: A125870 A076439 A341658 * A341666 A247896 A162357

Adjacent sequences: A168471 A168472 A168473 * A168475 A168476 A168477

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Nov 26 2009

Status

approved