Primes that can be written in binary representation as concatenation of two primes: p and p+2. That is, primes representable as p * 2^L + p+2, where p and p+2 are primes, and L is the length of binary representation of p+2: L = A070939(p+2).
A232236
Primes that can be written in binary representation as concatenation of two primes: p and p+2. That is, primes representable as p * 2^L + p+2, where p and p+2 are primes, and L is the length of binary representation of p+2: L = A070939(p+2).
Terms
- a(0) =29a(1) =47a(2) =563a(3) =9161a(4) =137999a(5) =2149403a(6) =2358401a(7) =3526331a(8) =41776109a(9) =43250849a(10) =46347803a(11) =51607709a(12) =53819819a(13) =55540349a(14) =59866253a(15) =62176679a(16) =539082821a(17) =545571083a(18) =546947381a(19) =625199753a(20) =627165893a(21) =629525261a(22) =650169731a(23) =654102011a(24) =680644901a(25) =687526391a(26) =688509461a(27) =690082373
External references
- oeis: A232236