Articles are grouped in sections on arithmetic, primes, irrationality and continued fractions, sums of squares and polygonal numbers, Fibonacci numbers, number-theoretic functions
, and elliptic curves, cubes, and Fermat's last theorem.
From the point of view of classical mathematics, there are uncountably many sets of natural numbers and uncountably many number-theoretic functions
. Since the finitist (meta-)mathematician probably refuses to allow the postulation of uncountably many figures, he will not have enough figures at his disposal for "coding" all number-theoretic functions