🔢 Sequences & Series Calculator
🔢 Sequences & Series Calculator
Set the values above and press Calculate.
Formulae used
Arithmetic: a\u2099 = a\u2081 + (n\u22121)d and S\u2099 = n/2 \u00d7 (2a\u2081 + (n\u22121)d).
Geometric: a\u2099 = a\u2081 \u00d7 r\u207f\u207b\u00b9 and S\u2099 = a\u2081(1 \u2212 r\u207f) / (1 \u2212 r). When |r| < 1 the infinite
series converges to a\u2081 / (1 \u2212 r); otherwise it diverges and has no finite sum.