User blog comment:Googleaarex/Help to Complete a Ggggol Series/@comment-25371339-20140919015429/@comment-25371339-20140921235042

What about this?

Gggg-n = (10,100(n)100)

Example:

Gggg-centa = (10,100(100)100)

Gggg-deca = (10,100(10)100)

Gggg-viginta (also Gggg-icosa) = (10,100(20)100)