A288955 Integers that are the sum of two consecutive semiprimes, as well as the product of two consecutive semiprimes.
24, 1482, 2805, 3596, 7917, 12765, 17157, 17822, 21170, 25122, 29913, 36278, 42230, 45582, 58539, 61503, 62997, 109886, 117986, 145542, 258055, 264710, 268323, 272994, 281957, 294306, 306362, 319790, 324318, 387506, 491397, 599838, 613085, 656091, 679758, 709806, 771762, 793877
Offset: 1
Keywords
Examples
24 = A118717(4) = A108215(1), 1482 = A118717(223) = A108215(14).
Programs
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Mathematica
s = Partition[Select[Range[10^6], PrimeOmega@ # == 2 &], 2, 1]; Intersection[Map[Total, s], Map[Times @@ # &, s]] (* Michael De Vlieger, Jun 21 2017 *)
Extensions
More terms from Michel Marcus, Jun 27 2017