1583400

Appears in sequences

• Triangle read by rows: Characteristic polynomials of lower triangular Bell number matrix.at n=26A101908
• Number of 0..3 arrays of length n with each element differing from at least one neighbor by 1 or less, starting with 0.at n=12A221678
• G.f.: x^2 * f''(x), where f(x) = Product_{k>=1} 1 / (1 - x^k).at n=26A278406
• Product of first n Bell numbers.at n=6A294373