A092192 Semiprimes that are the sum of two successive semiprimes.

10, 15, 51, 69, 77, 85, 95, 106, 115, 134, 143, 159, 178, 187, 201, 217, 226, 237, 262, 267, 291, 301, 327, 335, 346, 355, 361, 381, 395, 403, 411, 415, 422, 427, 437, 447, 502, 527, 565, 586, 597, 614, 623, 633, 649, 669, 674, 687, 713, 723, 758, 763, 789

Offset: 1

Author

Zak Seidov, Feb 23 2004

Keywords

• easy
• nonn

Examples

			51 is a member because 51=25+26, sum of 9th and 10th semiprimes.
		

Links

• Zak Seidov, Table of n,a(n) for n=1..10000.

Crossrefs

Cf. A092191.

Programs

Mathematica

Select[Total/@Partition[Select[Range[400],PrimeOmega[#]==2&],2,1], PrimeOmega[ #]==2&] (* Harvey P. Dale, Jan 19 2019 *)