a(n) is the least prime p such that the sum of n consecutive primes starting with p has exactly n prime factors, counted with multiplicity, or 0 if no such p exists.
A339185
a(n) is the least prime p such that the sum of n consecutive primes starting with p has exactly n prime factors, counted with multiplicity, or 0 if no such p exists.
Terms
- a(0) =2a(1) =0a(2) =137a(3) =5a(4) =41a(5) =109a(6) =4253a(7) =569a(8) =23057a(9) =821a(10) =405863a(11) =9013a(12) =1049173a(13) =73009a(14) =9742969a(15) =188017a(16) =382355863a(17) =236527a(18) =3198295691a(19) =1843111a(20) =21640201361a(21) =7600499a(22) =376724314301a(23) =33177461a(25) =305216017a(27) =148597987a(29) =951267841a(31) =1140850357
External references
- oeis: A339185