Sequences calculators
11 calculators Arithmetic Sequence Calculator Find the nth term, partial sum, and any missing value of an arithmetic sequence. Reverse-solve for a1, d, or n, and see a list of every term with steps.
Open Fibonacci Calculator Find any Fibonacci number with exact big-integer math. List the sequence, explore negative indices, use custom seeds, and see the golden ratio converge.
Open Geometric Sequence Calculator Find the nth term, partial sums, infinite sum, and full term list for any geometric sequence. Supports reverse-solve: enter two terms to find the ratio and first term.
Open Collatz Conjecture Calculator Enter any positive integer to generate its full Collatz (hailstone) sequence, count total steps to reach 1, find the peak value, and see a step-by-step chart.
Open Convolution Calculator Compute discrete convolution of two sequences instantly. Choose linear or circular mode, see each output term worked out step by step, and read the result table.
Open Harmonic Number Calculator Calculate the nth harmonic number instantly. Shows the exact fraction, decimal, asymptotic approximation, generalized H(n,m), step-by-step partial sums, and a growth chart.
Open Lagrange Error Bound Calculator Calculate the Lagrange error bound for a Taylor polynomial instantly. Enter the degree, evaluation point, center, and max derivative to find the maximum approximation error.
Open Pascal's Triangle Calculator Generate Pascal's triangle up to any row, find any binomial coefficient C(n,k), or look up the row sum. Step-by-step working shown for every calculation.
Open Sequence Calculator Find the nth term and sum of an arithmetic, geometric, or Fibonacci sequence. Shows step-by-step work, lists the first N terms, and plots the sequence.
Open Sum of a Linear Number Sequence Calculator Find the sum, final term, and nth term of any arithmetic sequence. Enter the first term, common difference, and number of terms for instant results.
Open Sum of Series Calculator Calculate the sum of arithmetic, geometric (finite and infinite), harmonic, square, and cube number series. Shows the formula, worked steps, and a cumulative-sum chart.
Open
No calculators match your filter.