численный состав(e.g. ...they challenged the proposal for the Senate Select Committee on three counts: the numerical composition of the committee, the scope of the investigation... Maria Klavdieva)
порядковые номера(A numerical sequence is a set of ordered values of a function, whose domain consists of the set of all natural numbers in ascending order of the numbers. The elements of a sequence are called the terms. portal.tpu.ru:7777/SHARED/k/KONVAL/Sites/English_sites/calculus/1_Basic_f.htm Alexander Demidov)