374796021600domain: NAppears in sequencesSmallest number with same number of divisors as 3*a(n-1).at n=30A307015Ordered set partitions of the set {1, 2, ..., 4*n} with all block sizes divisible by 4, irregular triangle T(n, k) for n >= 0 and 0 <= k < A000041(n), read by rows.at n=26A327024