573574domain: NAppears in sequencesDiagonal sums of the Riordan array A116382.at n=21A116384Number of base pyramids in all dispersed Dyck paths of length n (i.e., in all Motzkin paths of length n with no (1,0)-steps at positive heights).at n=20A191394Least positive integer k such that Sum_{i=1..k} phi(i) >= 10^n.at n=11A343802