151165domain: NAppears in sequencesNumber of partitions of n into parts of exactly four sorts which are introduced in ascending order such that sorts of adjacent parts are different.at n=9A320546Triangle read by rows, T(n, k) = n! * [y^k] [x^n] exp(1/(1 - x)^(1 + y) - 1), for 0 <= k <= n.at n=32A355267