RSolveValue

RSolveValue[eqn,expr,n] gives the value of expr determined by a symbolic solution to the ordinary difference equation eqn with independent variable n.

RSolveValue[{eqn1,eqn2,…},expr,…] uses a symbolic solution for a list of difference equations.

RSolveValue[eqn,expr,{n1,n2,…}] uses a solution for the partial recurrence equation eqn.

Examples

Solve a recurrence relation:

RSolveValue[{a[n] == a[n - 1] + a[n - 2], a[0] == 1, a[1] == 1}, a[n], n]

Please visit the official Wolfram Language Reference for more details.