hi Des,
I am not sure i do understand your question, also I am not very technical person, but maybe you are looking for this:
select toStartOfMinute(now())+ number as seq_date
FROM numbers(999999) num
Would give you something like this:
seq_date
2021-05-17 08:35:23
2021-05-17 08:35:24
2021-05-17 08:35:25
2021-05-17 08:35:26
2021-05-17 08:35:27
2021-05-17 08:35:28
2021-05-17 08:35:29
V.