LED series and parallel connection 7S3P
May be a solution if thermally matched.








simulate this circuit &ndash; Schematic created using CircuitLab


Add 0 in front of dot .16amp and capitalize Amp , and fan implies LEDs are hot but his problem is mismatched fan voltage and hot series R's that even fan cannot cool. 
best solution is use a better metal PCB heatsink for LED's and if necessary,  a fan to match supply voltage