What you're seeing above [if you chose to view it] was actually the show's opening title, which also doubled as a "promo" for the series shortly after its premiere in September 1974.
This was another of Fred Silverman's patented animated versions of "favorite TV sitcoms"- he discovered, while programming CBS' Saturday morning schedules during the '60s and '70s, the "dirty little secret" that kids will watch a cartoon version of their favorite live-action rerun IF it was "handled correctly"- as previously demonstrated in cartoon versions of "THE LONE RANGER", "THE [NEW] ADVENTURES OF SUPERMAN" and "BATMAN". However, his idea to turn "Charlie Chan" into "THE AMAZING CHAN AND THE CHAN CLAN" in 1972 was an unqualified disaster. In 1973, Silverman scheduled animated variations of "MY FAVORITE MARTIAN" and "{I DREAM OF} JEANNIE". Their success led to this amalgam of "THE PARTRIDGE FAMILY" and "THE JETSONS". It originally aired at 9:30am(et) [right after repeats of the first season of "JEANNIE"], but was quickly pulled in January 1975 in favor of repeats of "PEBBLES AND BAMM-BAMM", then moved to Sunday mornings and quietly dropped at the end of the season. It was later shown as part of the daily syndicated "FRED FLINTSTONE & FRIENDS" package in 1977-'79, and has not appeared on TV since....