15543026747domain: NAppears in sequencesSum of multinomial coefficients (n_1+n_2+...)!/(n_1!*n_2!*...) where (n_1, n_2, ...) runs over all integer partitions of n.at n=13A005651a(n) = Sum_{k=0..binomial(n,2)} (-1)^k*A152534(n,k).at n=26A152536