Minimum positive value of lcm{1,...,n}*(s_1/1 + ... + s_n/n), where each s_i equals 1 or -1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =7a(5) =3a(6) =11a(7) =13a(8) =11a(9) =11a(10) =23a(11) =23a(12) =607a(13) =251a(14) =251a(15) =125a(16) =97a(17) =97a(18) =3767a(19) =3767a(20) =3767a(21) =2285a(22) =24319a(23) =24319a(24) =71559a(25) =4261a(26) =13703a(27) =13703a(28) =872843a(29) =872843