Numerator of smallest nonnegative fraction of form +- 1 +- 1/2 +- 1/3 ... +- 1/n.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =7a(6) =1a(7) =11a(8) =13a(9) =11a(10) =11a(11) =23a(12) =23a(13) =607a(14) =251a(15) =251a(16) =25a(17) =97a(18) =97a(19) =3767a(20) =3767a(21) =3767a(22) =457a(23) =24319a(24) =24319a(25) =7951a(26) =4261a(27) =13703a(28) =13703a(29) =872843