104890domain: NAppears in sequencesNumber of ways to place 3 nonattacking wazirs on a 3 X n board.at n=29A172229Nearest integer to the product of all integer roots of n from the second to the n-th.at n=36A330153a(n) = Sum_{k=1..n} k^2*sigma_2(k), where sigma_2 is A001157.at n=12A364268