"Specific sequence" refers to a particular order or arrangement of items or events. It means that each element follows a particular pattern or comes after another in a predetermined way. Full definition
So, there's this perception that sex is one specific sequence of events that, once we set the precedent of having sex, seems to always be the goal. (mindbodygreen.com)
The letters on the page before you have a very specific sequence. (religion-online.org)
Life seems to have a sort of power over the chemical level in that it is capable of integrating and organizing chemical processes into specific sequences that give it the character of life. (religion-online.org)