1041480domain: NAppears in sequencesa(n) = T(n,n-2), T given by A026568. Also a(n) = number of integer strings s(0), ..., s(n) counted by T, such that s(n) = 2.at n=15A026571Total length of self-avoiding walks with n bonds on the simple cubic lattice with additional bridges of length 2.at n=7A259820