Goldbach conjecture: a(n) = number of decompositions of 2n into sum of two primes (counting 1 as a prime).
A001031
Goldbach conjecture: a(n) = number of decompositions of 2n into sum of two primes (counting 1 as a prime).
Terms
- a(0) =1a(1) =2a(2) =2a(3) =2a(4) =2a(5) =2a(6) =3a(7) =2a(8) =3a(9) =3a(10) =3a(11) =4a(12) =3a(13) =2a(14) =4a(15) =3a(16) =4a(17) =4a(18) =3a(19) =3a(20) =5a(21) =4a(22) =4a(23) =6a(24) =4a(25) =3a(26) =6a(27) =3a(28) =4a(29) =7
External references
- oeis: A001031