67940domain: NAppears in sequencesExpansion of 1/cos(log(1+x)).at n=8A009007a(n) = (2*n^3 + 5*n^2 - 3*n)/2.at n=39A162256Number of endless self-avoiding walks of length n for the square lattice.at n=10A334322Numbers that are the sum of six fourth powers in exactly six ways.at n=31A345818