The second of the pair of consecutive integers k and k+1 such that sopfr(k) divides sopfr(k+1), where sopfr(k) is the sum of the prime factors of k, counting multiplicity.
A129317
The second of the pair of consecutive integers k and k+1 such that sopfr(k) divides sopfr(k+1), where sopfr(k) is the sum of the prime factors of k, counting multiplicity.
Terms
- a(0) =6a(1) =9a(2) =16a(3) =78a(4) =126a(5) =161a(6) =253a(7) =497a(8) =715a(9) =949a(10) =981a(11) =1046a(12) =1054a(13) =1261a(14) =1331a(15) =1379a(16) =1405a(17) =1431a(18) =1509a(19) =1521a(20) =1611a(21) =1751a(22) =1863a(23) =1891a(24) =2171a(25) =2492a(26) =2681a(27) =2822a(28) =3095a(29) =3101
External references
- oeis: A129317