LSN mentioned in Backup is missing in Backupset
But i couldn't find that LSN in the results.


The tran log backup taken at 09:00 contains the lsn 38000000116100001. 


  Full backup and Tlog backup occurs at the same time every 15 minutes.Does that create any issue while restoring.?


No. Full backups never affect the log chain.


  I start with a full backup restore,then i restore all tlog backups and i skip full backups which occurred in between.? 


Yes that is correct.