Determine Sequence last used value for sql server before 2017
I'm not sure why you care about this.  Normally you only care about the NEXT VALUE, as looking at the current_value is tricky with multiple sessions.  

But you're essentially trying to determine if the sequence has been incremented.  So you can simply increment every sequence once after you create it.  EG

instead of 

CREATE SEQUENCE SEQ_TEST START WITH 1


use

CREATE SEQUENCE SEQ_TEST START WITH 0
SELECT NEXT VALUE FOR SEQ_TEST