IPA: /ˌɪnkənˈsɛkətɪv/
KK: /ɪnˈkɒnsɪkʊtɪv/
Not occurring in a sequence or order; having gaps between occurrences.
The numbers on the list were inconsecutive, skipping several values in between.
Inconsecutive → It is formed from "in-" (meaning not) and "consecutivus" (from Latin, meaning following in order). The word "inconsecutive" means not following in order or not sequential.
Think of 'not' ('in-') and 'following in order' ('consecutivus') to remember that 'inconsecutive' describes something that does not follow a sequence.