1056600domain: NAppears in sequencesExpansion of f(f(x)), where f = x + x^2 + x^4 + x^8 + x^16 + ...at n=28A007801Number of 0..n arrays x(0..4) of 5 elements with each no smaller than the sum of its three previous neighbors modulo (n+1).at n=25A200669