Chapter 11 - Further Topics in Algebra - 11.2 Arithmetic Sequences and Series - 11.2 Exercises - Page 1024: 17

$a_{1}=8;$ $a_{2}=14;$ $a_{3}=20;$ $a_{4}=26;$ $a_{5}=32$

$a_{n}=a_{1}+\left( n-1\right) d\Rightarrow $ $a_{1}=8;$ $a_{2}=a_{1}+d=8+6=14;$ $a_{3}=a_{1}+2d=8+2\times 6=20;$ $a_{4}=a_{1}+3d=8+18=26;$ $a_{5}=a_{1}+4d=8+24=32$