Numerators of Sum_{k=1..n} 1/lcm(n,k).

Terms

a(0) =1a(1) =1a(2) =5a(3) =5a(4) =37a(5) =47a(6) =69a(7) =263a(8) =1321a(9) =1429a(10) =9901a(11) =17249a(12) =113741a(13) =161191a(14) =32867a(15) =158363a(16) =3157279a(17) =5777183a(18) =18358381a(19) =20649997a(20) =9258477a(21) =10610101a(22) =24266365a(23) =2411391361a(24) =2299685867a(25) =1072410923a(26) =22804031069a(27) =27841579901a(28) =395718022103