Solution
= Solution
Starting from $A_N=1$, recursion gives $A_n=1/(N-n+1)$. The coefficient recursion gives $B_n=(N-n+1)\gamma^{(N-n)/2}$, including $B_N=1$.
= Solution
Starting from $A_N=1$, recursion gives $A_n=1/(N-n+1)$. The coefficient recursion gives $B_n=(N-n+1)\gamma^{(N-n)/2}$, including $B_N=1$.