378880domain: NAppears in sequencesNumber of length n arrays x(i), i=1..n with x(i) in i..i+4 and no value appearing more than 3 times.at n=7A250357Product_{n>=1} 1 / (1 - x^n)^(a(n)/n!) = 1 + arctanh(x).at n=8A354118Product_{n>=1} (1 + x^n)^(a(n)/n!) = 1 + arctanh(x).at n=8A354276Self-convolution of A300116.at n=3A380975