In the short story The Nine Billion Names of God from 1953, science fiction author Arthur C. Clarke had Tibetan monks hire a couple of Americans to compute the nine billion names of god for them. The task would have taken the monks 15,000 years to do by hand, according to Clarke, so they wanted to have a go at contemporary modern technolgy to speed it up.

The premises are:

• A custom alphabet
• Maximium name length: 9 characters
• No more than three identical letters in succession
• Nine billion names (give or take) altogether