A FATIGUED B757 CREW ON THE LAX SEAVU RWY 25L ARR WAS CHANGED TO RWY 24R BUT DUE TO A FMC PROGRAMMING ERROR NEEDED VECTORS TO THE ARPT.

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CLEARED TO DESCEND ON SEAVU ARRIVAL FOR RWY 25L; 'MAINTAIN 300 KNOTS OR GREATER.' PRIOR TO SEAVU; GIVEN RUNWAY ASSIGNMENT CHANGE TO RWY 24R. DURING APPROACH BRIEFING; FO STATED THAT HE HAD INSTALLED; '24 RIGHT IN ROUTE 2.' FOLLOWING RUNWAY ASSIGNMENT CHANGE; FO SELECTED ROUTE 2 AND MY MAP SHOWED A PARALLEL DISPLAY FOR RWY 25L. I TOLD THE FO; 'THAT'S NOT RIGHT; I STILL SEE RWY 25.' AFTER NUMEROUS UNSUCCESSFUL ATTEMPTS BY THE FO TO CORRECT THE SITUATION; I TOLD HIM TO ABANDON THE FMC AND REQUEST A VECTOR AND DESCENT FOR THE ILS RWY 24 RIGHT FROM ATC. MEANWHILE; I WAS TURNING TO INTERCEPT THE RWY 24 RIGHT LOCALIZER VIA RAW DATA. FO COMPLIED; ATC ISSUED THE VECTOR; DESCENT CLEARANCE AND SUBSEQUENT APPROACH CLEARANCE. THERE WAS NO SIGNIFICANT DEVIATION FROM THE ARRIVAL AND ATC DID NOT INDICATE ANY CONFLICTS OR PROBLEMS. WE LANDED UNEVENTFULLY. CONTRIBUTING FACTORS: FO HAD IN FACT LOADED THE SEAVU ARRIVAL FOR RWY 25 LEFT ON ROUTE 2; NOT RWY 24 RIGHT. FO STATED THAT THIS WAS HIS SEVENTH TRIP IN 2 WEEKS AND HE WAS TIRED. ALSO; WE HAD AN EARLY MORNING; EAST COAST DEPARTURE AND IT WAS APPROXIMATELY AFTERNOON DOMICILE TIME WHEN HE LOADED THE ROUTE 2 PAGE. I GLANCED AT THE ROUTE 2 PAGE; CONFIRMED A SEAVU ARRIVAL; AND ALSO DID NOT NOTICE THAT IT WAS FOR RWY 25L AND NOT RWY 24R. ALSO; THIS WAS MY SEVENTH DAY OUT OF EIGHT FLYING; EARLY DOMICILE TIME; AND SUFFERED PERFORMANCE DEGRADATION DUE TO ONEROUS SCHEDULING.SUPPLEMENTAL INFO FROM ACN 785189: CONTRIBUTING FACTORS TO THIS OCCURRENCE WERE: 1) WHILE I CHECKED ROUTE 1 PRIOR TO THE TOP OF DESCENT; I OMITTED RE-CHECKING ROUTE 2. 2) LAST MINUTE RUNWAY/TRANSITION CHANGE. 3) EARLY BODY CLOCK WAKE-UP TIME. 4) THIS WAS MY SEVENTH (7TH) TRIP IN A 2 WEEK PERIOD WITH MINIMAL TIME OFF.