197316

Appears in sequences

• Coefficients of Chebyshev polynomials.at n=26A005583
• Numbers k such that sigma(phi(k)) - phi(k) = phi(sigma(k)), where phi(k) is the Euler totient function of k and sigma(k) is the sum of the divisors of k.at n=20A271633
• Expansion of e.g.f. 1/(1 - (exp(x) - 1)^3).at n=8A353774
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = Sum_{j=0..n} (k*j)!* Stirling2(n,k*j).at n=74A357868