We are required to find the first 4 terms of the sequence an = 63 +(n-1)5
The nth term of the sequence is given by the formula
an = 63 +(n-1)5
When n = 1
The first term is 63
when n=2
The second term is 68
When n=3
The third term is 73
When n = 4
The fouth term is 78
Hence, the first 4 terms of the sequence are 63, 68, 73, 78