Examples using Maple to work with sequences
> a:=3*(-1)^n/n;
> seq(evalf(a),n=1..20);
> with(wfucalc);
> seqf(a,n=1..20);
![matrix([[n, 3*(-1)^n/n], [1., -3.000000000], [2., 1...](images/seqexamples8.gif)
> plotseqf(a,n=1..20);
![[Maple Plot]](images/seqexamples9.gif)
> b:=3*(-1)^n/n!;
> seq(b,n=1..20);
> seqf(b,n=1..10);
![matrix([[n, 3*(-1)^n/n!], [1., -3.], [2., 1.5000000...](images/seqexamples14.gif)
> plotseqf(b,n=1..10);
![[Maple Plot]](images/seqexamples15.gif)
> c:=product(2*k,k=1..n);
> seq(c,n=1..10);
> d:=cos(n*Pi/2);
> seq(d,n=1..12);
> e:=(2*n+1)/(n^2+1);
> seqf(e,n=1..20);
![matrix([[n, (2*n+1)/(n^2+1)], [1., 1.500000000], [2...](images/seqexamples21.gif)
> seq(1.2^n,n=1..20);
> seq(0.9^n,n=1..20);
> seq(0.5^n,n=1..20);
> seq((-0.4)^n,n=1..20);
> seq((-1.1)^n,n=1..20);
> seq((-1)^n,n=1..20);
> plotseqf((-1)^n,n=1..20);
![[Maple Plot]](images/seqexamples38.gif)
> seq(1^n,n=1..20);
