57480192000domain: NAppears in sequencesExpansion of e.g.f. (1 + x)^5*log(1 + x).at n=17A274270Irregular triangle read by rows: T(n, k) is the number of k X k matrices using all the integers from 1 to k^2 and having trace equal to n, with 1 <= k <= A003056(n).at n=39A362209