Indices m such that A128646(m)+1 is prime, where A128646 = denominators of partial sums of 1/(prime(i)-1).
A137691
Indices m such that A128646(m)+1 is prime, where A128646 = denominators of partial sums of 1/(prime(i)-1).
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =10a(7) =11a(8) =12a(9) =13a(10) =14a(11) =18a(12) =38a(13) =376a(14) =377a(15) =378a(16) =379a(17) =380a(18) =381a(19) =382a(20) =383a(21) =384a(22) =385a(23) =475a(24) =476a(25) =477a(26) =478a(27) =479a(28) =488a(29) =489
External references
- oeis: A137691