-1217

Appears in sequences

• Expansion of tanh(x)*cos(sin(x)).at n=3A009825
• a(n) = -n^2 + 9*n + 23.at n=40A126719
• Regular triangle, T(n, k) = f(n, k) - f(n, 0) + 1, where f(n, k) = Sum_{j=0..k} (-1)^j*StirlingS2(n, n-j)*binomial(n,j) + Sum_{j=0..n-k} (-1)^j*StirlingS2(n, n-j)*binomial(n, j), read by rows.at n=30A176156
• Regular triangle, T(n, k) = f(n, k) - f(n, 0) + 1, where f(n, k) = Sum_{j=0..k} (-1)^j*StirlingS2(n, n-j)*binomial(n,j) + Sum_{j=0..n-k} (-1)^j*StirlingS2(n, n-j)*binomial(n, j), read by rows.at n=33A176156