A053629 Smallest integer where the harmonic mean of a(n) and A005279(n) is an integer.

2, 4, 3, 6, 5, 8, 4, 6, 14, 12, 10, 7, 5, 16, 18, 8, 12, 18, 6, 28, 9, 15, 21, 26, 20, 12, 33, 10, 7, 32, 22, 25, 34, 24, 21, 36, 11, 16, 38, 45, 8, 21, 39, 12, 15, 46, 20, 26, 18, 30, 9, 42, 13, 40, 54, 33, 24, 30, 58, 70, 66, 20, 14, 62, 55, 54, 10, 64, 30, 28, 18, 50, 68, 48

Offset: 1

Author

Henry Bottomley, Mar 20 2000

Keywords

• nonn

Comments

if m is not in A005279 then smallest integer to have an integer harmonic mean with m is m

Crossrefs

Cf. A005279, A046793.