Sequential Number

Hi Team,

Need your help on below. i get source input in the following way (excel format) and i have to show the recrods where there is a sequence in Invoice No.

Input from source
Vendor Invoice No
V1 100
V1 101
V1 102
V1 103
V1 107
V1 108
V1 109
V1 111
V1 113
V1 115
V1 116

Output required :

Vendor Invoice No
V1 100
V1 101
V1 102
V1 103
V1 107
V1 108
V1 109
V1 115
V1 116

regards,
Kamal M.

So why is 115 sequence and 113 not?