698901domain: NAppears in sequencesOctagonal numbers (A000567) that are the sum of three consecutive octagonal numbers.at n=0A258129Octagonal numbers (A000567) in which parity of digits alternates.at n=37A297647Cogrowth sequence of the 12-element group A4 = <S,T | S^3, T^2, (ST)^3>.at n=23A377626