49082domain: NAppears in sequencesSecond elementary symmetric function of 3,4,...,n+3.at n=21A024183Number of subsequences of {1..n} such that all differences of pairs of terms are distinct (i.e., number of Golomb rulers on {1..n}).at n=26A054578Binomial transform of [1, 1, 6, 6, 6, ...].at n=13A131066