is this right series in octect rule?

The octect rule is a rule which states that atoms combine

so that they have electrons in their valence (outermost) shell

so that they attain the configuration of a noble gas.

, , , , , …

The series has nothing to do with the octect rule.

The nth term of this sequence is:

-(/)n^ + (/)n^ – (/)n^ + (/)n –

Therefore, term number is: / =