478720

Appears in sequences

• arcsinh(arcsin(x)*sin(x))=2/2!*x^2-80/6!*x^6+1344/8!*x^8+256768/10!*x^10...at n=5A012334
• Numbers k that divide the (right) concatenation of all numbers <= k written in base 17 (most significant digit on left).at n=23A029462
• a(n)= n*(a(n-1)+4), a(0)=1.at n=8A166677
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 305", based on the 5-celled von Neumann neighborhood.at n=18A287546