which number best completes the sequence 1 1 3 2 4 6 5 25

[Carm]

First 1
3x3=9-5=4+1=5*5=25-5=20+1=21*21=441-5=436
Start with 3,square, subtract 5, add 1, repeat

Second
2+4=6-2=3+5=8-2=6+6=12-2=10
+x , -2, +(x+1), -2, +(x+2), -2,+(x+3), -2

x=4