220752domain: NAppears in sequencesTheta series of direct sum of 4 copies of hexagonal lattice.at n=20A008655A104013 in decimal.at n=18A104014A104013 in decimal.at n=37A104014a(n) = AR(n) is the total number of aperiodic k-reverses of n.at n=26A180322Expansion of E_6(q)^2 in powers of q.at n=2A280869