291480domain: NAppears in sequencesa(n) = n*(n+1)*(7*n^2 - n - 4)/4.at n=20A172077Number of n-step self-avoiding walks on 12-D cubic lattice.at n=4A342888a(n) is the number of 4-step self avoiding walks in the n-dimensional hypercubic lattice that start at the origin.at n=11A374397