7711200domain: NAppears in sequencesSum of the non-unitary divisors of A064115(n) (or of 1+A064115(n)).at n=28A103846Triangle read by rows: T(n,k) = the number of ascending runs of length k in the permutations of [n] for k <= n.at n=46A122843Number of runs or rising sequences of length 2 among all permutations of n.at n=8A141052