Hi, i have been reading a mathematical indcution book and i start answering the exercises but i think i have a problem with this one, I'll be grateful if you help

# Problem

Determine U_{n}if we know that U_{1}=1 and U_{k}=U_{k-1 }+ 3. for K>1.

suggestion: U_{1}=3*1 - 2, U_{2}=3*2 - 2