harmonic series 1/n .
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Yes. If the Maclaurin expansion of a function locally converges to the function, then you know the function is smooth. In addition, if the residual of the Maclaurin expansion converges to 0, the function is analytic.
The series 0, 1, 1, 2, 3, 5, 8, 13... is called the Fibonacci series because it was his book that introduced the series to Western mathematicians. Unlike modern interpretations of the sequence, The Liber Abaci started the sequence at 1.
The Fibonacci sequence. The Fibonacci Sequence is the series of numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, ... The next number is found by adding up the two numbers before it
The next four number in the sequence are... 4,5,5 & 6
It is the sequence of first differences. If these are all the same (but not 0), then the original sequence is a linear arithmetic sequence. That is, a sequence whose nth term is of the form t(n) = an + b