Special numbers Bell numbers Bell numbers Bernoulli numbers Bernoulli numbers and Riemann zeta Inverting a power series Sums of consecutive powers Bernoulli numbers and trig functions Partition numbers Partition numbers and Ramanujan’s approximation Heegner numbers Heegner numbers and almost integers Number of feet in a mile Stirling numbers Stirling numbers, including negative arguments Log-concave coefficients Harmonic numbers Computing harmonic numbers Numerators of harmonic numbers Tetrahedral numbers Tetrahedral numbers Catalan numbers How many ways can you parenthesize an expression? Number of digits in Catalan numbers Fibonacci numbers Distribution of Fibonacci numbers mod m Inverse Fibonacci numbers Fibonacci / Binomial coefficient identity Fibonacci numbers and orthogonal polynomials