What is the value of the 4th harmonic number H4H_4H4 defined by Hn=Hn−1+1nH_n = H_{n-1} + \frac{1}{n}Hn=Hn−1+n1 with H1=1H_1 = 1H1=1?
1312\frac{13}{12}1213
74\frac{7}{4}47
2512\frac{25}{12}1225
116\frac{11}{6}611