59030domain: NAppears in sequencesNumbers having four 8's in base 9.at n=30A043488Susceptibility series H_4 for 2-dimensional Ising model (divided by 2) for 1 particle excitation.at n=12A055920Numbers n such that n^1+n+1, n^2+n+1, n^3+n+1 and n^4+n+1 are all prime.at n=25A219117