185014domain: NAppears in sequencesa(n) = a(n-1) + floor(a(n-2)/2) with a(0)=1, a(1)=2.at n=39A064324Sum of square displacements over all self-avoiding walks on cubic lattice trapped after n steps. Numerator of mean square displacement a(n)/A077817(n).at n=5A079157