56302domain: NAppears in sequencesNumber of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= sqrt(n).at n=19A048094Numbers k such that 2*3^k - 5 is prime.at n=24A057910Number of partitions p of n such that (number of numbers in p of form 3k) < (number of numbers in p of form 3k+1).at n=46A241743