223524

Appears in sequences

• Left-right/right-left numbers: n = pq such that n=q_reversed*p_reversed.at n=4A009944
• A triangular sequence of coefficients from a three level exponential expansion function: f(x,t) = log(1 + t)*(1 - t)*exp(x*(t - t^2)).at n=41A137455
• a(n) = number of solutions to an equation x_1 + ... + x_j =0 with 1<=j<=n satisfying -n<=x_i<=n (1<=i<=j).at n=5A160492
• A subset of vampire numbers: n has a nontrivial factorization using n's digits in reverse order.at n=7A179482