So I've been able to track down my SR copy, and
at 13th level he had
3x1st, 2x2nd, 1x3rd cleric spells
3x1st, 2x2nd, 1x3rd wizard spells
IIRC we continued the pattern on from there (which in retrospect was a mistake but hey, we were young and experimental, and it seemed obvious at the time)...