Looks like a “three strikes” law, which imposes a mandatory heavy (in this case, ridiculously heavy given the offenses) sentence after a certain number of felony convictions:
“After this conviction under La.R.S. 14:67, Mr. Jackson was sentenced in accordance with R.S. 15:529.1 A(1)(c)(ii), which states in pertinent part:
If the fourth or subsequent felony or any of the prior felonies is a felony defined as a crime of violence under R.S. 14:2(13) ․ the person shall be imprisoned for the remainder of his natural life, without benefit of parole, probation, or suspension of sentence.
After a sentencing hearing at which the State proved Mr. Jackson's multiple offender status, the trial court simply stated that “because of the specific provisions of the law ․ the sentence must be ․ life imprisonment without benefit of parole, probation or suspension.” Mr. Jackson has prior convictions for simple burglary in 1991 and in 1986 and for simple robbery in 1979. Simple robbery is listed as a crime of violence under La.R.S. 14:2(13).”
https://caselaw.findlaw.com/la-court-of-appeal/1042986.html