a(n) is the least prime p such that there are exactly n pairs of primes (q,r) with p > q > r such that q | r + p and r | q + p.
A344776
a(n) is the least prime p such that there are exactly n pairs of primes (q,r) with p > q > r such that q | r + p and r | q + p.
Terms
- a(0) =2a(1) =11a(2) =7a(3) =19a(4) =103a(5) =163a(6) =263a(7) =719a(8) =3119a(9) =3779a(10) =6719a(11) =18719a(12) =7559a(13) =67679a(14) =52919a(15) =181439a(16) =138599a(17) =241919a(18) =818999a(19) =262079a(20) =453599a(21) =665279a(22) =1542239a(23) =1713599a(24) =1330559a(25) =4979519a(26) =2741759a(27) =5569199a(28) =7197119a(29) =5745599
External references
- oeis: A344776