A374591 Even numbers that can be written as the sum of two isolated primes (A007510).

4, 46, 60, 70, 74, 76, 84, 90, 94, 100, 102, 104, 106, 112, 114, 116, 120, 126, 130, 132, 134, 136, 142, 144, 146, 150, 154, 156, 158, 160, 162, 164, 166, 168, 172, 174, 176, 178, 180, 184, 186, 190, 192, 194, 196, 198, 200, 202, 204, 206, 210, 214, 216, 220

Offset: 1

Author

Marc Groz, Jul 12 2024

Keywords

• nonn

Examples

			4 = 2 + 2 is a term, as 2 is the smallest isolated prime.
60 = 23 + 37 is the smallest term that is the sum of two distinct isolated primes.
		

Crossrefs

Cf. A007510.

Programs

Mathematica

Lim=220;ip=Select[Prime[Range[Lim]], NoneTrue[#+{2, -2}, PrimeQ]&] ;ipp[a_]:={a,a};Select[Union[Total/@Join[ipp/@ip,Subsets[ip,{2}]]],EvenQ[#]&&#<=Lim&] (* James C. McMahon, Aug 10 2024 *)