### 2.13.1 Array of values of a sequence : `tablefunc`

`tablefunc` is a command that should be used inside a spreadsheet (opened with `Alt+t`), it returns a template to fill two columns, with the table of values of a function. If the step value is 1, `tablefunc(ex,n,n0,1)`, where `ex` is an expression depending on `n`, will fill the spreadsheet with the values of the sequence un=ex for n=n0, n0+1, n0+2,.....

Example : display the values of the sequence un=sin(n)
Select a cell of a spreadsheet (for example `C0`) and input in the command line :

`tablefunc(sin(n),n,0,1)`

Output :

`two columns :` `n` `and` `sin(n)`

- in the column C: the variable name `n`, the value of the step (this value should be equal to 1 for a sequence), the value of `n0` (here 0), then a recurrence formula (`C2+C$1`, ...).
- in the column D: `sin(n)`, `"Tablefunc"`, then a recurrence formula.
- For each row, the values of the sequence `u``n``=``sin``(n)` correspond to the values of `n` starting from `n=n0` (here 0).